Question

If a:b:c are proportion then how do we convert them to ratio

Answer 1

$your \: answer$
a:b:c = 1:2:3
EXAMPLE
1+2+3 = 6
$\frac{1}{6}$
$\frac{2}{6} = \frac{1}{3}$
$\frac{3}{6} = \frac{1}{2}$