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Finding the Fourth Proportional to 667,978.84, 1,001,754.42 and 218,577.88

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Solution

The fourth proportional to 667,978.84, 1,001,754.42 and 218,577.88 is: 327,796.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    667,978.84 : 1,001,754.42 = 218,577.88 : x
  2. Step 2: Convert to fraction form
    667,978.84/1,001,754.42 = 218,577.88/x
  3. Step 3: Cross multiply
    667,978.84x = 1,001,754.42 × 218,577.88
  4. Step 4: Simplify right side
    667,978.84x = 218,961,357,404.23
  5. Step 5: Solve for x
    x = 218,961,357,404.23/667,978.84
  6. Step 6: Final answer
    x = 327,796.85

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.