4/7 of the box must be green apples. If there are 24 green apples, the numerator is multiplied by 6. Since it must stay proportional, multiply the denominator, 7 by six to find there are a total of 42 apples
The hundred thousand column is the 6th column so you look at the 5th number and round 9 rounds up to 0 but this also changes the 900000 to 1000000 so 992449 = 1000000 to nearest hundred thousand