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Finding the Fourth Proportional to 683,691.40, 943,490.52 and 377,788.88

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Solution

The fourth proportional to 683,691.40, 943,490.52 and 377,788.88 is: 521,346.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    683,691.40 : 943,490.52 = 377,788.88 : x
  2. Step 2: Convert to fraction form
    683,691.40/943,490.52 = 377,788.88/x
  3. Step 3: Cross multiply
    683,691.40x = 943,490.52 × 377,788.88
  4. Step 4: Simplify right side
    683,691.40x = 356,440,226,841.42
  5. Step 5: Solve for x
    x = 356,440,226,841.42/683,691.40
  6. Step 6: Final answer
    x = 521,346.66

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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.