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Finding the Fourth Proportional to 663,445.32, 995,553.42 and 279,165.84

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Solution

The fourth proportional to 663,445.32, 995,553.42 and 279,165.84 is: 418,910.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    663,445.32 : 995,553.42 = 279,165.84 : x
  2. Step 2: Convert to fraction form
    663,445.32/995,553.42 = 279,165.84/x
  3. Step 3: Cross multiply
    663,445.32x = 995,553.42 × 279,165.84
  4. Step 4: Simplify right side
    663,445.32x = 277,924,506,759.17
  5. Step 5: Solve for x
    x = 277,924,506,759.17/663,445.32
  6. Step 6: Final answer
    x = 418,910.95

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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.