Home / 1,143,378.32-1,577,851.31-627,121.71

Finding the Fourth Proportional to 1,143,378.32, 1,577,851.31 and 627,121.71

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Solution

The fourth proportional to 1,143,378.32, 1,577,851.31 and 627,121.71 is: 865,422.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,143,378.32 : 1,577,851.31 = 627,121.71 : x
  2. Step 2: Convert to fraction form
    1,143,378.32/1,577,851.31 = 627,121.71/x
  3. Step 3: Cross multiply
    1,143,378.32x = 1,577,851.31 × 627,121.71
  4. Step 4: Simplify right side
    1,143,378.32x = 989,504,808,517.33
  5. Step 5: Solve for x
    x = 989,504,808,517.33/1,143,378.32
  6. Step 6: Final answer
    x = 865,422.05

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.