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Finding the Fourth Proportional to 506,800.60, 699,375.90 and 291,940

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Solution

The fourth proportional to 506,800.60, 699,375.90 and 291,940 is: 402,872.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    506,800.60 : 699,375.90 = 291,940 : x
  2. Step 2: Convert to fraction form
    506,800.60/699,375.90 = 291,940/x
  3. Step 3: Cross multiply
    506,800.60x = 699,375.90 × 291,940
  4. Step 4: Simplify right side
    506,800.60x = 204,175,800,246
  5. Step 5: Solve for x
    x = 204,175,800,246/506,800.60
  6. Step 6: Final answer
    x = 402,872.06

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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.