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Finding the Fourth Proportional to 521,645.55, 781,938.98 and 296,540.85

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Solution

The fourth proportional to 521,645.55, 781,938.98 and 296,540.85 is: 444,510.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    521,645.55 : 781,938.98 = 296,540.85 : x
  2. Step 2: Convert to fraction form
    521,645.55/781,938.98 = 296,540.85/x
  3. Step 3: Cross multiply
    521,645.55x = 781,938.98 × 296,540.85
  4. Step 4: Simplify right side
    521,645.55x = 231,876,848,294.63
  5. Step 5: Solve for x
    x = 231,876,848,294.63/521,645.55
  6. Step 6: Final answer
    x = 444,510.35

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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.