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Finding the Fourth Proportional to 502,355.13, 693,234.08 and 287,490.59

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Solution

The fourth proportional to 502,355.13, 693,234.08 and 287,490.59 is: 396,727.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    502,355.13 : 693,234.08 = 287,490.59 : x
  2. Step 2: Convert to fraction form
    502,355.13/693,234.08 = 287,490.59/x
  3. Step 3: Cross multiply
    502,355.13x = 693,234.08 × 287,490.59
  4. Step 4: Simplify right side
    502,355.13x = 199,298,269,763.68
  5. Step 5: Solve for x
    x = 199,298,269,763.68/502,355.13
  6. Step 6: Final answer
    x = 396,727.85

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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.