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Finding the Fourth Proportional to 542,832.70, 814,249.05 and 487,720.30

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Solution

The fourth proportional to 542,832.70, 814,249.05 and 487,720.30 is: 731,580.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    542,832.70 : 814,249.05 = 487,720.30 : x
  2. Step 2: Convert to fraction form
    542,832.70/814,249.05 = 487,720.30/x
  3. Step 3: Cross multiply
    542,832.70x = 814,249.05 × 487,720.30
  4. Step 4: Simplify right side
    542,832.70x = 397,125,790,940.72
  5. Step 5: Solve for x
    x = 397,125,790,940.72/542,832.70
  6. Step 6: Final answer
    x = 731,580.45

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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.