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Finding the Fourth Proportional to 542,818.60, 814,227.90 and 343,364.20

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Solution

The fourth proportional to 542,818.60, 814,227.90 and 343,364.20 is: 515,046.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    542,818.60 : 814,227.90 = 343,364.20 : x
  2. Step 2: Convert to fraction form
    542,818.60/814,227.90 = 343,364.20/x
  3. Step 3: Cross multiply
    542,818.60x = 814,227.90 × 343,364.20
  4. Step 4: Simplify right side
    542,818.60x = 279,576,711,501.18
  5. Step 5: Solve for x
    x = 279,576,711,501.18/542,818.60
  6. Step 6: Final answer
    x = 515,046.30

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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.