Home / 923,876.20-1,386,332.70-391,306.60

Finding the Fourth Proportional to 923,876.20, 1,386,332.70 and 391,306.60

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Solution

The fourth proportional to 923,876.20, 1,386,332.70 and 391,306.60 is: 587,179.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    923,876.20 : 1,386,332.70 = 391,306.60 : x
  2. Step 2: Convert to fraction form
    923,876.20/1,386,332.70 = 391,306.60/x
  3. Step 3: Cross multiply
    923,876.20x = 1,386,332.70 × 391,306.60
  4. Step 4: Simplify right side
    923,876.20x = 542,481,135,305.82
  5. Step 5: Solve for x
    x = 542,481,135,305.82/923,876.20
  6. Step 6: Final answer
    x = 587,179.47

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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.