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Finding the Fourth Proportional to 639,902.75, 883,049.91 and 367,964.16

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Solution

The fourth proportional to 639,902.75, 883,049.91 and 367,964.16 is: 507,781.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,902.75 : 883,049.91 = 367,964.16 : x
  2. Step 2: Convert to fraction form
    639,902.75/883,049.91 = 367,964.16/x
  3. Step 3: Cross multiply
    639,902.75x = 883,049.91 × 367,964.16
  4. Step 4: Simplify right side
    639,902.75x = 324,930,718,371.23
  5. Step 5: Solve for x
    x = 324,930,718,371.23/639,902.75
  6. Step 6: Final answer
    x = 507,781.41

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.