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Finding the Fourth Proportional to 614,747.90, 922,121.85 and 413,981.30

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Solution

The fourth proportional to 614,747.90, 922,121.85 and 413,981.30 is: 620,971.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    614,747.90 : 922,121.85 = 413,981.30 : x
  2. Step 2: Convert to fraction form
    614,747.90/922,121.85 = 413,981.30/x
  3. Step 3: Cross multiply
    614,747.90x = 922,121.85 × 413,981.30
  4. Step 4: Simplify right side
    614,747.90x = 381,741,202,221.41
  5. Step 5: Solve for x
    x = 381,741,202,221.41/614,747.90
  6. Step 6: Final answer
    x = 620,971.95

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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.