Home / 521,129.28-781,576.23-264,702.15

Finding the Fourth Proportional to 521,129.28, 781,576.23 and 264,702.15

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Solution

The fourth proportional to 521,129.28, 781,576.23 and 264,702.15 is: 396,993.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    521,129.28 : 781,576.23 = 264,702.15 : x
  2. Step 2: Convert to fraction form
    521,129.28/781,576.23 = 264,702.15/x
  3. Step 3: Cross multiply
    521,129.28x = 781,576.23 × 264,702.15
  4. Step 4: Simplify right side
    521,129.28x = 206,884,908,469.90
  5. Step 5: Solve for x
    x = 206,884,908,469.90/521,129.28
  6. Step 6: Final answer
    x = 396,993.45

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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.