Home / 488,876.85-731,839.05-429,827.85

Finding the Fourth Proportional to 488,876.85, 731,839.05 and 429,827.85

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Solution

The fourth proportional to 488,876.85, 731,839.05 and 429,827.85 is: 643,443.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    488,876.85 : 731,839.05 = 429,827.85 : x
  2. Step 2: Convert to fraction form
    488,876.85/731,839.05 = 429,827.85/x
  3. Step 3: Cross multiply
    488,876.85x = 731,839.05 × 429,827.85
  4. Step 4: Simplify right side
    488,876.85x = 314,564,805,407.54
  5. Step 5: Solve for x
    x = 314,564,805,407.54/488,876.85
  6. Step 6: Final answer
    x = 643,443.86

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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.