Home / 752,869.62-1,128,429-279,252.90

Finding the Fourth Proportional to 752,869.62, 1,128,429 and 279,252.90

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Solution

The fourth proportional to 752,869.62, 1,128,429 and 279,252.90 is: 418,554.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    752,869.62 : 1,128,429 = 279,252.90 : x
  2. Step 2: Convert to fraction form
    752,869.62/1,128,429 = 279,252.90/x
  3. Step 3: Cross multiply
    752,869.62x = 1,128,429 × 279,252.90
  4. Step 4: Simplify right side
    752,869.62x = 315,117,070,694.10
  5. Step 5: Solve for x
    x = 315,117,070,694.10/752,869.62
  6. Step 6: Final answer
    x = 418,554.64

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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.