1) \(1 : \frac{4}{7} = 7 : 4\)
2) \(\frac{1}{6} : \frac{3}{4} = \frac{1}{6} \cdot \frac{4}{3} = \frac{4}{18} = \frac{2}{9} = 2 : 9\)
3) \(0.6 : 0.04 = 60 : 4 = 15\)
4) \(1\frac{1}{8} : 2\frac{1}{12} = \frac{9}{8} : \frac{25}{12} = \frac{9}{8} \cdot \frac{12}{25} = \frac{9 \cdot 3}{2 \cdot 25} = \frac{27}{50} = 27 : 50\)