1708 G. Vaux tr. J. C. Sturm II. 91 A Quintuple [L. quintupla] Ratio, 5 to 1.
1800 R. Fellowes 105 The value of money has decreased in at least a quintuple ratio, since the present rates of parliamentary qualification were established.
1837 Oct. 449 The Catholics of the United States have advanced in a quintuple ratio since 1800.