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Finding the Fourth Proportional to 521,798.76, 781,295.13 and 331,227.50

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Solution

The fourth proportional to 521,798.76, 781,295.13 and 331,227.50 is: 495,950.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    521,798.76 : 781,295.13 = 331,227.50 : x
  2. Step 2: Convert to fraction form
    521,798.76/781,295.13 = 331,227.50/x
  3. Step 3: Cross multiply
    521,798.76x = 781,295.13 × 331,227.50
  4. Step 4: Simplify right side
    521,798.76x = 258,786,428,765.60
  5. Step 5: Solve for x
    x = 258,786,428,765.60/521,798.76
  6. Step 6: Final answer
    x = 495,950.64

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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.