Home / 1,287,650.24-1,933,371.38-720,143.21

Finding the Fourth Proportional to 1,287,650.24, 1,933,371.38 and 720,143.21

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Solution

The fourth proportional to 1,287,650.24, 1,933,371.38 and 720,143.21 is: 1,081,275.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,287,650.24 : 1,933,371.38 = 720,143.21 : x
  2. Step 2: Convert to fraction form
    1,287,650.24/1,933,371.38 = 720,143.21/x
  3. Step 3: Cross multiply
    1,287,650.24x = 1,933,371.38 × 720,143.21
  4. Step 4: Simplify right side
    1,287,650.24x = 1,392,304,258,447.76
  5. Step 5: Solve for x
    x = 1,392,304,258,447.76/1,287,650.24
  6. Step 6: Final answer
    x = 1,081,275.19

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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.