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Finding the Fourth Proportional to 542,826.20, 814,239.30 and 487,713.80

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Solution

The fourth proportional to 542,826.20, 814,239.30 and 487,713.80 is: 731,570.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    542,826.20 : 814,239.30 = 487,713.80 : x
  2. Step 2: Convert to fraction form
    542,826.20/814,239.30 = 487,713.80/x
  3. Step 3: Cross multiply
    542,826.20x = 814,239.30 × 487,713.80
  4. Step 4: Simplify right side
    542,826.20x = 397,115,743,112.34
  5. Step 5: Solve for x
    x = 397,115,743,112.34/542,826.20
  6. Step 6: Final answer
    x = 731,570.70

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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.