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Finding the Fourth Proportional to 868,757.80, 1,303,136.70 and 269,714.20

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Solution

The fourth proportional to 868,757.80, 1,303,136.70 and 269,714.20 is: 404,571.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    868,757.80 : 1,303,136.70 = 269,714.20 : x
  2. Step 2: Convert to fraction form
    868,757.80/1,303,136.70 = 269,714.20/x
  3. Step 3: Cross multiply
    868,757.80x = 1,303,136.70 × 269,714.20
  4. Step 4: Simplify right side
    868,757.80x = 351,474,472,531.14
  5. Step 5: Solve for x
    x = 351,474,472,531.14/868,757.80
  6. Step 6: Final answer
    x = 404,571.30

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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.