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Finding the Fourth Proportional to 639,493.70, 960,666.15 and 534,517.70

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Solution

The fourth proportional to 639,493.70, 960,666.15 and 534,517.70 is: 802,968.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,493.70 : 960,666.15 = 534,517.70 : x
  2. Step 2: Convert to fraction form
    639,493.70/960,666.15 = 534,517.70/x
  3. Step 3: Cross multiply
    639,493.70x = 960,666.15 × 534,517.70
  4. Step 4: Simplify right side
    639,493.70x = 513,493,060,965.86
  5. Step 5: Solve for x
    x = 513,493,060,965.86/639,493.70
  6. Step 6: Final answer
    x = 802,968.13

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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.