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Finding the Fourth Proportional to 512,898.70, 769,348.05 and 488,404.30

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Solution

The fourth proportional to 512,898.70, 769,348.05 and 488,404.30 is: 732,606.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    512,898.70 : 769,348.05 = 488,404.30 : x
  2. Step 2: Convert to fraction form
    512,898.70/769,348.05 = 488,404.30/x
  3. Step 3: Cross multiply
    512,898.70x = 769,348.05 × 488,404.30
  4. Step 4: Simplify right side
    512,898.70x = 375,752,895,816.62
  5. Step 5: Solve for x
    x = 375,752,895,816.62/512,898.70
  6. Step 6: Final answer
    x = 732,606.45

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Double scale
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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.