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Finding the Fourth Proportional to 566,240.58, 781,379.52 and 311,591.76

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Solution

The fourth proportional to 566,240.58, 781,379.52 and 311,591.76 is: 429,978.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    566,240.58 : 781,379.52 = 311,591.76 : x
  2. Step 2: Convert to fraction form
    566,240.58/781,379.52 = 311,591.76/x
  3. Step 3: Cross multiply
    566,240.58x = 781,379.52 × 311,591.76
  4. Step 4: Simplify right side
    566,240.58x = 243,471,419,864.76
  5. Step 5: Solve for x
    x = 243,471,419,864.76/566,240.58
  6. Step 6: Final answer
    x = 429,978.76

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.