Home / 765,921.60-1,146,160.80-667,166.40

Finding the Fourth Proportional to 765,921.60, 1,146,160.80 and 667,166.40

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Solution

The fourth proportional to 765,921.60, 1,146,160.80 and 667,166.40 is: 998,378.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    765,921.60 : 1,146,160.80 = 667,166.40 : x
  2. Step 2: Convert to fraction form
    765,921.60/1,146,160.80 = 667,166.40/x
  3. Step 3: Cross multiply
    765,921.60x = 1,146,160.80 × 667,166.40
  4. Step 4: Simplify right side
    765,921.60x = 764,679,974,757.12
  5. Step 5: Solve for x
    x = 764,679,974,757.12/765,921.60
  6. Step 6: Final answer
    x = 998,378.91

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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.