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Finding the Fourth Proportional to 703,481.18, 970,807.40 and 381,191.87

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Solution

The fourth proportional to 703,481.18, 970,807.40 and 381,191.87 is: 526,046.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    703,481.18 : 970,807.40 = 381,191.87 : x
  2. Step 2: Convert to fraction form
    703,481.18/970,807.40 = 381,191.87/x
  3. Step 3: Cross multiply
    703,481.18x = 970,807.40 × 381,191.87
  4. Step 4: Simplify right side
    703,481.18x = 370,063,891,238.47
  5. Step 5: Solve for x
    x = 370,063,891,238.47/703,481.18
  6. Step 6: Final answer
    x = 526,046.61

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.