Home / 885,786.30-1,328,679.45-324,747.90

Finding the Fourth Proportional to 885,786.30, 1,328,679.45 and 324,747.90

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Solution

The fourth proportional to 885,786.30, 1,328,679.45 and 324,747.90 is: 487,121.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    885,786.30 : 1,328,679.45 = 324,747.90 : x
  2. Step 2: Convert to fraction form
    885,786.30/1,328,679.45 = 324,747.90/x
  3. Step 3: Cross multiply
    885,786.30x = 1,328,679.45 × 324,747.90
  4. Step 4: Simplify right side
    885,786.30x = 431,485,861,160.66
  5. Step 5: Solve for x
    x = 431,485,861,160.66/885,786.30
  6. Step 6: Final answer
    x = 487,121.85

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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.