Home / 747,638.73-1,121,589.52-321,436.17

Finding the Fourth Proportional to 747,638.73, 1,121,589.52 and 321,436.17

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Solution

The fourth proportional to 747,638.73, 1,121,589.52 and 321,436.17 is: 482,210.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    747,638.73 : 1,121,589.52 = 321,436.17 : x
  2. Step 2: Convert to fraction form
    747,638.73/1,121,589.52 = 321,436.17/x
  3. Step 3: Cross multiply
    747,638.73x = 1,121,589.52 × 321,436.17
  4. Step 4: Simplify right side
    747,638.73x = 360,519,438,817.35
  5. Step 5: Solve for x
    x = 360,519,438,817.35/747,638.73
  6. Step 6: Final answer
    x = 482,210.76

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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.