Home / 752,375.97-1,128,629.57-212,637.93

Finding the Fourth Proportional to 752,375.97, 1,128,629.57 and 212,637.93

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Solution

The fourth proportional to 752,375.97, 1,128,629.57 and 212,637.93 is: 318,975.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    752,375.97 : 1,128,629.57 = 212,637.93 : x
  2. Step 2: Convert to fraction form
    752,375.97/1,128,629.57 = 212,637.93/x
  3. Step 3: Cross multiply
    752,375.97x = 1,128,629.57 × 212,637.93
  4. Step 4: Simplify right side
    752,375.97x = 239,989,454,438.40
  5. Step 5: Solve for x
    x = 239,989,454,438.40/752,375.97
  6. Step 6: Final answer
    x = 318,975.44

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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.