729/490

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Interval information
Ratio 729/490
Monzo [-1 6 -1 -2
Size in cents 687.76448
Name(s) sensamagic fifth,
septimal sesquiaugmented acute fourth
Color name rrg4, rurugu 4th

729/490, the sensamagic fifth or septimal sesquiaugmented acute fourth is a 7-limit ratio of about 687 cents, flat of a just fifth 3/2 by a sensamagic comma 245/243.

It arises in just intonation scales often as the octave complement of 980/729.

See also