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Finding the Fourth Proportional to 636,432.66, 878,026.56 and 364,353.90

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Solution

The fourth proportional to 636,432.66, 878,026.56 and 364,353.90 is: 502,664.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    636,432.66 : 878,026.56 = 364,353.90 : x
  2. Step 2: Convert to fraction form
    636,432.66/878,026.56 = 364,353.90/x
  3. Step 3: Cross multiply
    636,432.66x = 878,026.56 × 364,353.90
  4. Step 4: Simplify right side
    636,432.66x = 319,912,401,439.58
  5. Step 5: Solve for x
    x = 319,912,401,439.58/636,432.66
  6. Step 6: Final answer
    x = 502,664.97

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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.