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Finding the Fourth Proportional to 461,990.40, 637,591.68 and 280,662.72

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Solution

The fourth proportional to 461,990.40, 637,591.68 and 280,662.72 is: 387,341.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    461,990.40 : 637,591.68 = 280,662.72 : x
  2. Step 2: Convert to fraction form
    461,990.40/637,591.68 = 280,662.72/x
  3. Step 3: Cross multiply
    461,990.40x = 637,591.68 × 280,662.72
  4. Step 4: Simplify right side
    461,990.40x = 178,948,215,158.17
  5. Step 5: Solve for x
    x = 178,948,215,158.17/461,990.40
  6. Step 6: Final answer
    x = 387,341.85

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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.