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Finding the Fourth Proportional to 526,540.28, 726,394.75 and 308,638.49

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Solution

The fourth proportional to 526,540.28, 726,394.75 and 308,638.49 is: 425,785.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    526,540.28 : 726,394.75 = 308,638.49 : x
  2. Step 2: Convert to fraction form
    526,540.28/726,394.75 = 308,638.49/x
  3. Step 3: Cross multiply
    526,540.28x = 726,394.75 × 308,638.49
  4. Step 4: Simplify right side
    526,540.28x = 224,193,374,380.36
  5. Step 5: Solve for x
    x = 224,193,374,380.36/526,540.28
  6. Step 6: Final answer
    x = 425,785.80

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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.