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Finding the Fourth Proportional to 500,905.80, 691,248.48 and 271,469.64

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Solution

The fourth proportional to 500,905.80, 691,248.48 and 271,469.64 is: 374,627.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    500,905.80 : 691,248.48 = 271,469.64 : x
  2. Step 2: Convert to fraction form
    500,905.80/691,248.48 = 271,469.64/x
  3. Step 3: Cross multiply
    500,905.80x = 691,248.48 × 271,469.64
  4. Step 4: Simplify right side
    500,905.80x = 187,652,976,016.15
  5. Step 5: Solve for x
    x = 187,652,976,016.15/500,905.80
  6. Step 6: Final answer
    x = 374,627.28

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1.5x scale

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.