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Finding the Fourth Proportional to 635,540.72, 876,680.04 and 380,744.28

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Solution

The fourth proportional to 635,540.72, 876,680.04 and 380,744.28 is: 525,207.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    635,540.72 : 876,680.04 = 380,744.28 : x
  2. Step 2: Convert to fraction form
    635,540.72/876,680.04 = 380,744.28/x
  3. Step 3: Cross multiply
    635,540.72x = 876,680.04 × 380,744.28
  4. Step 4: Simplify right side
    635,540.72x = 333,790,910,620.17
  5. Step 5: Solve for x
    x = 333,790,910,620.17/635,540.72
  6. Step 6: Final answer
    x = 525,207.75

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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.