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Finding the Fourth Proportional to 866,682.88, 1,299,138.72 and 333,995.20

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Solution

The fourth proportional to 866,682.88, 1,299,138.72 and 333,995.20 is: 500,651.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    866,682.88 : 1,299,138.72 = 333,995.20 : x
  2. Step 2: Convert to fraction form
    866,682.88/1,299,138.72 = 333,995.20/x
  3. Step 3: Cross multiply
    866,682.88x = 1,299,138.72 × 333,995.20
  4. Step 4: Simplify right side
    866,682.88x = 433,906,096,614.14
  5. Step 5: Solve for x
    x = 433,906,096,614.14/866,682.88
  6. Step 6: Final answer
    x = 500,651.51

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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.