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Finding the Fourth Proportional to 488,194.56, 673,134.54 and 391,320.96

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Solution

The fourth proportional to 488,194.56, 673,134.54 and 391,320.96 is: 539,562.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    488,194.56 : 673,134.54 = 391,320.96 : x
  2. Step 2: Convert to fraction form
    488,194.56/673,134.54 = 391,320.96/x
  3. Step 3: Cross multiply
    488,194.56x = 673,134.54 × 391,320.96
  4. Step 4: Simplify right side
    488,194.56x = 263,411,654,401.96
  5. Step 5: Solve for x
    x = 263,411,654,401.96/488,194.56
  6. Step 6: Final answer
    x = 539,562.86

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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.