There are arrays {1, 2, 3, 4}, {2, 4, 6, 8}, {3, 6, 9, 12} Then the sum of the four numbers in the 100th array is______ ．

There are arrays {1, 2, 3, 4}, {2, 4, 6, 8}, {3, 6, 9, 12} Then the sum of the four numbers in the 100th array is______ ．

Method 1: in this array, the sum of the numbers in each group is 10, 20, 30, 40. Therefore, the sum of the four numbers in the 100th number is 100 × 10 = 1000. Method 2: through observation, we can find that the relationship between the four numbers in brackets of each group is: the first number represents the group number, the second number is twice the first number, and the third number