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Finding the Fourth Proportional to 519,250.10, 778,875.15 and 487,757.30

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Solution

The fourth proportional to 519,250.10, 778,875.15 and 487,757.30 is: 731,635.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    519,250.10 : 778,875.15 = 487,757.30 : x
  2. Step 2: Convert to fraction form
    519,250.10/778,875.15 = 487,757.30/x
  3. Step 3: Cross multiply
    519,250.10x = 778,875.15 × 487,757.30
  4. Step 4: Simplify right side
    519,250.10x = 379,902,040,201.10
  5. Step 5: Solve for x
    x = 379,902,040,201.10/519,250.10
  6. Step 6: Final answer
    x = 731,635.95

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Double scale
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Similar ratio
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1.5x scale

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.