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Finding the Fourth Proportional to 391,277.66, 587,512.44 and 372,010.54

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Solution

The fourth proportional to 391,277.66, 587,512.44 and 372,010.54 is: 558,582.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    391,277.66 : 587,512.44 = 372,010.54 : x
  2. Step 2: Convert to fraction form
    391,277.66/587,512.44 = 372,010.54/x
  3. Step 3: Cross multiply
    391,277.66x = 587,512.44 × 372,010.54
  4. Step 4: Simplify right side
    391,277.66x = 218,560,819,693.92
  5. Step 5: Solve for x
    x = 218,560,819,693.92/391,277.66
  6. Step 6: Final answer
    x = 558,582.42

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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.