Finding the Fourth Proportional to 478,492.18, 660,334.18 and 274,580.44
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Solution
The fourth proportional to 478,492.18, 660,334.18 and 274,580.44 is: 378,929.60
Step by Step Solution
- Step 1: Write the proportion equation
478,492.18 : 660,334.18 = 274,580.44 : x - Step 2: Convert to fraction form
478,492.18/660,334.18 = 274,580.44/x - Step 3: Cross multiply
478,492.18x = 660,334.18 × 274,580.44 - Step 4: Simplify right side
478,492.18x = 181,314,849,691.44 - Step 5: Solve for x
x = 181,314,849,691.44/478,492.18 - Step 6: Final answer
x = 378,929.60
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.