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Finding the Fourth Proportional to 641,474.57, 962,425.62 and 215,052.56

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Solution

The fourth proportional to 641,474.57, 962,425.62 and 215,052.56 is: 322,650.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    641,474.57 : 962,425.62 = 215,052.56 : x
  2. Step 2: Convert to fraction form
    641,474.57/962,425.62 = 215,052.56/x
  3. Step 3: Cross multiply
    641,474.57x = 962,425.62 × 215,052.56
  4. Step 4: Simplify right side
    641,474.57x = 206,972,088,578.46
  5. Step 5: Solve for x
    x = 206,972,088,578.46/641,474.57
  6. Step 6: Final answer
    x = 322,650.50

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Half scale
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Double scale
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Similar ratio
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1.5x scale

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.