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Finding the Fourth Proportional to 627,910.08, 866,496.96 and 356,002.80

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Solution

The fourth proportional to 627,910.08, 866,496.96 and 356,002.80 is: 491,273.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    627,910.08 : 866,496.96 = 356,002.80 : x
  2. Step 2: Convert to fraction form
    627,910.08/866,496.96 = 356,002.80/x
  3. Step 3: Cross multiply
    627,910.08x = 866,496.96 × 356,002.80
  4. Step 4: Simplify right side
    627,910.08x = 308,475,343,951.49
  5. Step 5: Solve for x
    x = 308,475,343,951.49/627,910.08
  6. Step 6: Final answer
    x = 491,273.12

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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.