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Finding the Fourth Proportional to 618,093.80, 925,479.61 and 392,231.38

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Solution

The fourth proportional to 618,093.80, 925,479.61 and 392,231.38 is: 587,292.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    618,093.80 : 925,479.61 = 392,231.38 : x
  2. Step 2: Convert to fraction form
    618,093.80/925,479.61 = 392,231.38/x
  3. Step 3: Cross multiply
    618,093.80x = 925,479.61 × 392,231.38
  4. Step 4: Simplify right side
    618,093.80x = 363,002,141,611.90
  5. Step 5: Solve for x
    x = 363,002,141,611.90/618,093.80
  6. Step 6: Final answer
    x = 587,292.97

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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.