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Finding the Fourth Proportional to 502,396.97, 693,267.59 and 287,487.77

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Solution

The fourth proportional to 502,396.97, 693,267.59 and 287,487.77 is: 396,710.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    502,396.97 : 693,267.59 = 287,487.77 : x
  2. Step 2: Convert to fraction form
    502,396.97/693,267.59 = 287,487.77/x
  3. Step 3: Cross multiply
    502,396.97x = 693,267.59 × 287,487.77
  4. Step 4: Simplify right side
    502,396.97x = 199,305,950,714.76
  5. Step 5: Solve for x
    x = 199,305,950,714.76/502,396.97
  6. Step 6: Final answer
    x = 396,710.10

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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.