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Finding the Fourth Proportional to 428,524.52, 591,195.56 and 275,538.39

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Solution

The fourth proportional to 428,524.52, 591,195.56 and 275,538.39 is: 380,134.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    428,524.52 : 591,195.56 = 275,538.39 : x
  2. Step 2: Convert to fraction form
    428,524.52/591,195.56 = 275,538.39/x
  3. Step 3: Cross multiply
    428,524.52x = 591,195.56 × 275,538.39
  4. Step 4: Simplify right side
    428,524.52x = 162,897,071,399.86
  5. Step 5: Solve for x
    x = 162,897,071,399.86/428,524.52
  6. Step 6: Final answer
    x = 380,134.78

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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.