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Finding the Fourth Proportional to 512,812.20, 769,218.30 and 483,287.70

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Solution

The fourth proportional to 512,812.20, 769,218.30 and 483,287.70 is: 724,931.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    512,812.20 : 769,218.30 = 483,287.70 : x
  2. Step 2: Convert to fraction form
    512,812.20/769,218.30 = 483,287.70/x
  3. Step 3: Cross multiply
    512,812.20x = 769,218.30 × 483,287.70
  4. Step 4: Simplify right side
    512,812.20x = 371,753,743,004.91
  5. Step 5: Solve for x
    x = 371,753,743,004.91/512,812.20
  6. Step 6: Final answer
    x = 724,931.55

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Similar ratio
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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.