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Finding the Fourth Proportional to 636,490.59, 878,142.03 and 360,818.88

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Solution

The fourth proportional to 636,490.59, 878,142.03 and 360,818.88 is: 497,808.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    636,490.59 : 878,142.03 = 360,818.88 : x
  2. Step 2: Convert to fraction form
    636,490.59/878,142.03 = 360,818.88/x
  3. Step 3: Cross multiply
    636,490.59x = 878,142.03 × 360,818.88
  4. Step 4: Simplify right side
    636,490.59x = 316,850,223,745.53
  5. Step 5: Solve for x
    x = 316,850,223,745.53/636,490.59
  6. Step 6: Final answer
    x = 497,808.18

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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.