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Finding the Fourth Proportional to 636,663.88, 878,720.96 and 364,913.91

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Solution

The fourth proportional to 636,663.88, 878,720.96 and 364,913.91 is: 503,652.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    636,663.88 : 878,720.96 = 364,913.91 : x
  2. Step 2: Convert to fraction form
    636,663.88/878,720.96 = 364,913.91/x
  3. Step 3: Cross multiply
    636,663.88x = 878,720.96 × 364,913.91
  4. Step 4: Simplify right side
    636,663.88x = 320,657,499,487.98
  5. Step 5: Solve for x
    x = 320,657,499,487.98/636,663.88
  6. Step 6: Final answer
    x = 503,652.73

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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.