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Finding the Fourth Proportional to 647,072.80, 970,609.20 and 332,144.80

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Solution

The fourth proportional to 647,072.80, 970,609.20 and 332,144.80 is: 498,217.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    647,072.80 : 970,609.20 = 332,144.80 : x
  2. Step 2: Convert to fraction form
    647,072.80/970,609.20 = 332,144.80/x
  3. Step 3: Cross multiply
    647,072.80x = 970,609.20 × 332,144.80
  4. Step 4: Simplify right side
    647,072.80x = 322,382,798,612.16
  5. Step 5: Solve for x
    x = 322,382,798,612.16/647,072.80
  6. Step 6: Final answer
    x = 498,217.20

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Half scale
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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.