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Simplify 405:45
The simplified ratio of 405:45 is 9:1. Free ratio calculator with GCD breakdown.
9:1
GCD of 405 and 45 is 45. Simplified: 405/45 : 45/45 = 9:1
How This Was Calculated
Simplification: Divide both terms by their GCD.A:B = (A/GCD) : (B/GCD)
Solving proportions: A/B = C/D — cross-multiply to find the missing value.
Scaling: Multiply both terms by the scale factor.
Quick Reference Table
| Input | Result |
|---|---|
| 405 / 40 | 81:8 |
| 405 / 43 | 405:43 |
| 405 / 44 | 405:44 |
| 405 / 46 | 405:46 |
| 405 / 47 | 405:47 |
| 405 / 50 | 81:10 |
Frequently Asked Questions
What is a ratio?
A ratio compares two quantities by division.
How do I simplify a ratio?
Divide both numbers by their greatest common divisor (GCD).
Can ratios have decimal values?
Yes, but simplified ratios are typically expressed as whole numbers.