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Finding the Fourth Proportional to 703,422.45, 970,721.61 and 381,141.27

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Solution

The fourth proportional to 703,422.45, 970,721.61 and 381,141.27 is: 525,974.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    703,422.45 : 970,721.61 = 381,141.27 : x
  2. Step 2: Convert to fraction form
    703,422.45/970,721.61 = 381,141.27/x
  3. Step 3: Cross multiply
    703,422.45x = 970,721.61 × 381,141.27
  4. Step 4: Simplify right side
    703,422.45x = 369,982,067,251.85
  5. Step 5: Solve for x
    x = 369,982,067,251.85/703,422.45
  6. Step 6: Final answer
    x = 525,974.21

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Double scale
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1.5x scale

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.