Home / 1,247,286.20-1,872,022.80-741,214.40

Finding the Fourth Proportional to 1,247,286.20, 1,872,022.80 and 741,214.40

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Solution

The fourth proportional to 1,247,286.20, 1,872,022.80 and 741,214.40 is: 1,112,471.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,247,286.20 : 1,872,022.80 = 741,214.40 : x
  2. Step 2: Convert to fraction form
    1,247,286.20/1,872,022.80 = 741,214.40/x
  3. Step 3: Cross multiply
    1,247,286.20x = 1,872,022.80 × 741,214.40
  4. Step 4: Simplify right side
    1,247,286.20x = 1,387,570,256,488.32
  5. Step 5: Solve for x
    x = 1,387,570,256,488.32/1,247,286.20
  6. Step 6: Final answer
    x = 1,112,471.43

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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.