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Finding the Fourth Proportional to 428,523.01, 591,193.49 and 275,536.89

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Solution

The fourth proportional to 428,523.01, 591,193.49 and 275,536.89 is: 380,132.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    428,523.01 : 591,193.49 = 275,536.89 : x
  2. Step 2: Convert to fraction form
    428,523.01/591,193.49 = 275,536.89/x
  3. Step 3: Cross multiply
    428,523.01x = 591,193.49 × 275,536.89
  4. Step 4: Simplify right side
    428,523.01x = 162,895,614,245.16
  5. Step 5: Solve for x
    x = 162,895,614,245.16/428,523.01
  6. Step 6: Final answer
    x = 380,132.71

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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.