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Finding the Fourth Proportional to 542,832.20, 814,248.30 and 487,719.80

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Solution

The fourth proportional to 542,832.20, 814,248.30 and 487,719.80 is: 731,579.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    542,832.20 : 814,248.30 = 487,719.80 : x
  2. Step 2: Convert to fraction form
    542,832.20/814,248.30 = 487,719.80/x
  3. Step 3: Cross multiply
    542,832.20x = 814,248.30 × 487,719.80
  4. Step 4: Simplify right side
    542,832.20x = 397,125,018,026.34
  5. Step 5: Solve for x
    x = 397,125,018,026.34/542,832.20
  6. Step 6: Final answer
    x = 731,579.70

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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.