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Finding the Fourth Proportional to 543,334.80, 815,002.20 and 490,190.70

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Solution

The fourth proportional to 543,334.80, 815,002.20 and 490,190.70 is: 735,286.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    543,334.80 : 815,002.20 = 490,190.70 : x
  2. Step 2: Convert to fraction form
    543,334.80/815,002.20 = 490,190.70/x
  3. Step 3: Cross multiply
    543,334.80x = 815,002.20 × 490,190.70
  4. Step 4: Simplify right side
    543,334.80x = 399,506,498,919.54
  5. Step 5: Solve for x
    x = 399,506,498,919.54/543,334.80
  6. Step 6: Final answer
    x = 735,286.05

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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.