[_0ffh]

Nitpick, ratios of °C do not make physical sense. For ratios of temperatures you should first convert them to Kelvin, Rankine, or something similar.

Accordingly, the ratio of 1430°C to 100°C is roughly 1703/373=4.6.

[Fredej]

The ratio between waters melting and boiling point is amazingly high at 100°C/0°C!