Finding the Fourth Proportional to 615,121.40, 922,682.10 and 517,143.80
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Solution
The fourth proportional to 615,121.40, 922,682.10 and 517,143.80 is: 775,715.70
Step by Step Solution
- Step 1: Write the proportion equation
615,121.40 : 922,682.10 = 517,143.80 : x - Step 2: Convert to fraction form
615,121.40/922,682.10 = 517,143.80/x - Step 3: Cross multiply
615,121.40x = 922,682.10 × 517,143.80 - Step 4: Simplify right side
615,121.40x = 477,159,327,385.98 - Step 5: Solve for x
x = 477,159,327,385.98/615,121.40 - Step 6: Final answer
x = 775,715.70
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.