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Finding the Fourth Proportional to 542,879.70, 813,789.94 and 258,493.87

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Solution

The fourth proportional to 542,879.70, 813,789.94 and 258,493.87 is: 387,488.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    542,879.70 : 813,789.94 = 258,493.87 : x
  2. Step 2: Convert to fraction form
    542,879.70/813,789.94 = 258,493.87/x
  3. Step 3: Cross multiply
    542,879.70x = 813,789.94 × 258,493.87
  4. Step 4: Simplify right side
    542,879.70x = 210,359,707,235.78
  5. Step 5: Solve for x
    x = 210,359,707,235.78/542,879.70
  6. Step 6: Final answer
    x = 387,488.62

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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.