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Finding the Fourth Proportional to 618,099.54, 925,488.20 and 392,237.12

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Solution

The fourth proportional to 618,099.54, 925,488.20 and 392,237.12 is: 587,301.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    618,099.54 : 925,488.20 = 392,237.12 : x
  2. Step 2: Convert to fraction form
    618,099.54/925,488.20 = 392,237.12/x
  3. Step 3: Cross multiply
    618,099.54x = 925,488.20 × 392,237.12
  4. Step 4: Simplify right side
    618,099.54x = 363,010,819,573.36
  5. Step 5: Solve for x
    x = 363,010,819,573.36/618,099.54
  6. Step 6: Final answer
    x = 587,301.55

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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.