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Finding the Fourth Proportional to 428,796.88, 591,644.94 and 247,470.28

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Solution

The fourth proportional to 428,796.88, 591,644.94 and 247,470.28 is: 341,454.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    428,796.88 : 591,644.94 = 247,470.28 : x
  2. Step 2: Convert to fraction form
    428,796.88/591,644.94 = 247,470.28/x
  3. Step 3: Cross multiply
    428,796.88x = 591,644.94 × 247,470.28
  4. Step 4: Simplify right side
    428,796.88x = 146,414,538,962.38
  5. Step 5: Solve for x
    x = 146,414,538,962.38/428,796.88
  6. Step 6: Final answer
    x = 341,454.30

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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.