Home / 428,397.20-591,253.25-273,415.38

Finding the Fourth Proportional to 428,397.20, 591,253.25 and 273,415.38

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Solution

The fourth proportional to 428,397.20, 591,253.25 and 273,415.38 is: 377,354.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    428,397.20 : 591,253.25 = 273,415.38 : x
  2. Step 2: Convert to fraction form
    428,397.20/591,253.25 = 273,415.38/x
  3. Step 3: Cross multiply
    428,397.20x = 591,253.25 × 273,415.38
  4. Step 4: Simplify right side
    428,397.20x = 161,657,732,024.99
  5. Step 5: Solve for x
    x = 161,657,732,024.99/428,397.20
  6. Step 6: Final answer
    x = 377,354.78

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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.