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Finding the Fourth Proportional to 462,400.75, 693,601.13 and 129,976.75

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Solution

The fourth proportional to 462,400.75, 693,601.13 and 129,976.75 is: 194,965.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    462,400.75 : 693,601.13 = 129,976.75 : x
  2. Step 2: Convert to fraction form
    462,400.75/693,601.13 = 129,976.75/x
  3. Step 3: Cross multiply
    462,400.75x = 693,601.13 × 129,976.75
  4. Step 4: Simplify right side
    462,400.75x = 90,152,020,673.73
  5. Step 5: Solve for x
    x = 90,152,020,673.73/462,400.75
  6. Step 6: Final answer
    x = 194,965.13

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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.