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Finding the Fourth Proportional to 542,819.40, 814,229.10 and 374,857.80

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Solution

The fourth proportional to 542,819.40, 814,229.10 and 374,857.80 is: 562,286.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    542,819.40 : 814,229.10 = 374,857.80 : x
  2. Step 2: Convert to fraction form
    542,819.40/814,229.10 = 374,857.80/x
  3. Step 3: Cross multiply
    542,819.40x = 814,229.10 × 374,857.80
  4. Step 4: Simplify right side
    542,819.40x = 305,220,129,121.98
  5. Step 5: Solve for x
    x = 305,220,129,121.98/542,819.40
  6. Step 6: Final answer
    x = 562,286.70

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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.