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Finding the Fourth Proportional to 627,679, 940,987.80 and 272,425.96

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Solution

The fourth proportional to 627,679, 940,987.80 and 272,425.96 is: 408,408.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    627,679 : 940,987.80 = 272,425.96 : x
  2. Step 2: Convert to fraction form
    627,679/940,987.80 = 272,425.96/x
  3. Step 3: Cross multiply
    627,679x = 940,987.80 × 272,425.96
  4. Step 4: Simplify right side
    627,679x = 256,349,504,763.29
  5. Step 5: Solve for x
    x = 256,349,504,763.29/627,679
  6. Step 6: Final answer
    x = 408,408.60

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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.