Which group of four numbers can form a proportion? Write down the proportion One half, one third, one sixth, one fourth Just change four groups and you can't repeat them

Which group of four numbers can form a proportion? Write down the proportion One half, one third, one sixth, one fourth Just change four groups and you can't repeat them

1/2：1/3=1/4:：1/6
1/2：1/4:=1/3：1/6
1/3：1/2=1/6：1/4
1/4：1/2=1/6：1/3

Which group of four numbers can form a proportion and write down the proportion  

（1）4：5＝12：15
（4）1/2：1/3=1/4:1/6
Method: the product of the largest number multiplied by the smallest number is equal to the product of the middle two numbers multiplied

Determine which group of four numbers can form a proportion, and write the proportion of the composition 【1】0.2 0.8 4 0.4 【2】 Two thirds, one third, one tenth and one fifth 【3】 1.5 quarter 1 6 【4】3 5 8 4 【5】 3 / 8 / 5 / 6 10 【6】1.6 6.4 2 5

The second one can be 1 / 3: 2 / 3 = 1 / 10: 1 / 5
The third one can be 1 / 4:1 = 1.5:6
The fifth can be 3 / 8: 5 / 8 = 6: 10

The four numbers in the following group can form a proportion. Write down the proportion （1）2,5,12,30 （2）3,4,5,6 (3) One half, one third, one fourth, one sixth (4) 1.6,2,3,2.4

（1) 2/12=5/30=1/6
(2) No
（3）（1/2）/（1/4）=（1/3）/（1/6）=2
（4）1.6/2=2.4/3=0.8

Which of the following four numbers can form a proportion? Write down the proportion (1) 2, 3, 4 and 5 (2) 1 / 2, 1 / 3, 1 / 4 and 1 / 6 Urgent, please do me a favor. It's due tomorrow,

(2) 1/2：1/4=1/3：1/6

Which group of four numbers can form a proportion （1）2、3、4、5 （2）1.6、6.4、2、5 （3）1/2、1/3、1/6、1/4

The third one can be composed of 1 / 2 1 / 4, 1 / 3 1 / 6, and 1 / 2 1 / 3 and 1 / 4 1 / 6

Which group of four numbers can form a proportion? Write down the proportion of the composition (8 kinds) 4 5 12 15 2 3 4 5 1.66.425 is not a score or something, it must be 8 kinds!

4：5=12：15
4：12=5：15
12：15=4：5
5：15=4：12
5：4=15：12
12：4=15：5
15：12=5：4
15：5=12：4

4. Judge which of the following four numbers can make up the proportion and write down the proportion. (1) 0.2,0.8,4,0.4（ 4. Judge which of the following groups of four numbers can form a proportion and write down the proportion. (1) 0.2,0.8,4,0.4 (2) 2 / 3,1 / 3,1 / 10,1 / 5 (3) 1.5,1 / 4,1,6 (4) 3,5,8,4 (5) 3 / 8,5 / 8,6,10 (6) 1.6,6.4,2,5

Reference answer:
(1) No
⑵2/3:1/3=1/5:1/10
⑶1/4:1=1.5:6
(4) No
⑸3/8:5/8=6:10
(6) No
First, arrange the numbers in order, and then see whether the product of the inner term is equal to the product of the outer term
Hope to help you!

Can 1 / 3, 3 / 4, 4 / 9 form a proportion? If so, write down the proportion

1/3:3/4=4:9
1/3:4=3/4:9

Ratio, 4 pieces As the title

2*3/（4+5）=2/3