Finding the Fourth Proportional to 385,460.13, 578,387.18 and 257,463.70
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Solution
The fourth proportional to 385,460.13, 578,387.18 and 257,463.70 is: 386,327.12
Step by Step Solution
- Step 1: Write the proportion equation
385,460.13 : 578,387.18 = 257,463.70 : x - Step 2: Convert to fraction form
385,460.13/578,387.18 = 257,463.70/x - Step 3: Cross multiply
385,460.13x = 578,387.18 × 257,463.70 - Step 4: Simplify right side
385,460.13x = 148,913,702,593.06 - Step 5: Solve for x
x = 148,913,702,593.06/385,460.13 - Step 6: Final answer
x = 386,327.12
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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.