Finding the Fourth Proportional to 457,812.20, 686,577.90 and 316,565.08
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Solution
The fourth proportional to 457,812.20, 686,577.90 and 316,565.08 is: 474,750.53
Step by Step Solution
- Step 1: Write the proportion equation
457,812.20 : 686,577.90 = 316,565.08 : x - Step 2: Convert to fraction form
457,812.20/686,577.90 = 316,565.08/x - Step 3: Cross multiply
457,812.20x = 686,577.90 × 316,565.08 - Step 4: Simplify right side
457,812.20x = 217,346,587,310.41 - Step 5: Solve for x
x = 217,346,587,310.41/457,812.20 - Step 6: Final answer
x = 474,750.53
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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.