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Finding the Fourth Proportional to 618,093.65, 925,479.39 and 392,231.23

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Solution

The fourth proportional to 618,093.65, 925,479.39 and 392,231.23 is: 587,292.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    618,093.65 : 925,479.39 = 392,231.23 : x
  2. Step 2: Convert to fraction form
    618,093.65/925,479.39 = 392,231.23/x
  3. Step 3: Cross multiply
    618,093.65x = 925,479.39 × 392,231.23
  4. Step 4: Simplify right side
    618,093.65x = 363,001,914,851.95
  5. Step 5: Solve for x
    x = 363,001,914,851.95/618,093.65
  6. Step 6: Final answer
    x = 587,292.74

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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.