If \( \large A:B = \frac{1}{3}:\frac{4}{9} \),\( \large B:C = \frac{5}{6}:\frac{7}{12} \), \( \large C:D = \frac{2}{7}:\frac{5}{14} \) then A : B : C : D is

A : B = \( \large \frac{1}{3} : \frac{4}{9}\)

B : C = \( \large \frac{5}{6} : \frac{7}{12} \)

A : B : C = \( \large \frac{5}{18} : \frac{20}{54}:\frac{7}{27} \)

C : D = \( \large \frac{7}{27} \times \frac{5}{14} \times \frac{7}{2} = \frac{35}{108}  \)

A : B : C : D = \( \large \frac{5}{18} : \frac{10}{27} : \frac{7}{27} : \frac{35}{108} \)

=\( \large\frac{30 : 40 : 28 : 35}{108}\)