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Finding the Fourth Proportional to 512,791.20, 769,186.80 and 483,266.70

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Solution

The fourth proportional to 512,791.20, 769,186.80 and 483,266.70 is: 724,900.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    512,791.20 : 769,186.80 = 483,266.70 : x
  2. Step 2: Convert to fraction form
    512,791.20/769,186.80 = 483,266.70/x
  3. Step 3: Cross multiply
    512,791.20x = 769,186.80 × 483,266.70
  4. Step 4: Simplify right side
    512,791.20x = 371,722,366,519.56
  5. Step 5: Solve for x
    x = 371,722,366,519.56/512,791.20
  6. Step 6: Final answer
    x = 724,900.05

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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.