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Finding the Fourth Proportional to 627,420.79, 940,989.84 and 178,132.42

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Solution

The fourth proportional to 627,420.79, 940,989.84 and 178,132.42 is: 267,158.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    627,420.79 : 940,989.84 = 178,132.42 : x
  2. Step 2: Convert to fraction form
    627,420.79/940,989.84 = 178,132.42/x
  3. Step 3: Cross multiply
    627,420.79x = 940,989.84 × 178,132.42
  4. Step 4: Simplify right side
    627,420.79x = 167,620,797,394.61
  5. Step 5: Solve for x
    x = 167,620,797,394.61/627,420.79
  6. Step 6: Final answer
    x = 267,158.50

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1.5x scale

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.