 A ratio may be specified either by giving both constituting numbers, written as ""a" to "b"" or ""a"∶"b"", or by giving just the value of their quotient Equal quotients correspond to equal ratios.Consequently, a ratio may be considered as an ordered pair of numbers, as a fraction with the first number in the numerator and the second as denominator, or as the value denoted by this fraction.Ratios of counts, given by (non-zero) natural numbers, are rational numbers, and may sometimes be natural numbers.