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Finding the Fourth Proportional to 488,609.80, 731,489.10 and 348,641.80

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Solution

The fourth proportional to 488,609.80, 731,489.10 and 348,641.80 is: 521,945.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    488,609.80 : 731,489.10 = 348,641.80 : x
  2. Step 2: Convert to fraction form
    488,609.80/731,489.10 = 348,641.80/x
  3. Step 3: Cross multiply
    488,609.80x = 731,489.10 × 348,641.80
  4. Step 4: Simplify right side
    488,609.80x = 255,027,676,504.38
  5. Step 5: Solve for x
    x = 255,027,676,504.38/488,609.80
  6. Step 6: Final answer
    x = 521,945.48

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.