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Finding the Fourth Proportional to 636,997.47, 879,588.32 and 423,092.46

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Solution

The fourth proportional to 636,997.47, 879,588.32 and 423,092.46 is: 584,220.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    636,997.47 : 879,588.32 = 423,092.46 : x
  2. Step 2: Convert to fraction form
    636,997.47/879,588.32 = 423,092.46/x
  3. Step 3: Cross multiply
    636,997.47x = 879,588.32 × 423,092.46
  4. Step 4: Simplify right side
    636,997.47x = 372,147,187,279.06
  5. Step 5: Solve for x
    x = 372,147,187,279.06/636,997.47
  6. Step 6: Final answer
    x = 584,220.83

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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.