Percentage change question

I'll just set out the numbers first then say what I would like to know.

351 195 65 39 650

54% 30% 10% 6% 100%

would there be a way to figure out the smallest possible whole number values for A-D that would need to be added to make the numbers represent these percentages.

A+351 B+195 C+65 D+39 A+B+C+D+650

35% 32% 22% 11% 100%

please note I'm not a very mathy person so intricate explanations will be wasted on me :P. I'm really just concerned if its possible and how simple/difficult it is to do.

Thanks.