Surface area of two spheres are in the ratio 1:4 what is the ratio of their volumes?

Starting from the ratio of their surface area (3*V1/R1)/(3*V2/R2) = 1/4we get V1/V2 = R1/4R2

where :

V1 and R1 : the volume and the radius of the 1st sphere respectively.

V2 and R2 : the volume and the radius of the 2nd sphere respectively.