Final answer:
400,000 is 1000 times greater than 400. This is calculated by dividing 400,000 by 400.
Step-by-step explanation:
To determine how many times greater 400,000 is from 400, we need to divide the larger number by the smaller number. So, we take 400,000 and divide it by 400.
400,000 ÷ 400 = 1000
This means that 400,000 is 1000 times greater than 400.
When dealing with problems like this, it is important to ensure both quantities are in the same units if they are provided in different units such as meters and kilometers. However, since both numbers provided here are unitless, we can proceed directly with the division to find the factor of difference.