Home / 1,390,997.20-2,085,329.40-726,149.20

Finding the Fourth Proportional to 1,390,997.20, 2,085,329.40 and 726,149.20

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Solution

The fourth proportional to 1,390,997.20, 2,085,329.40 and 726,149.20 is: 1,088,614.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,390,997.20 : 2,085,329.40 = 726,149.20 : x
  2. Step 2: Convert to fraction form
    1,390,997.20/2,085,329.40 = 726,149.20/x
  3. Step 3: Cross multiply
    1,390,997.20x = 2,085,329.40 × 726,149.20
  4. Step 4: Simplify right side
    1,390,997.20x = 1,514,260,275,546.48
  5. Step 5: Solve for x
    x = 1,514,260,275,546.48/1,390,997.20
  6. Step 6: Final answer
    x = 1,088,614.90

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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.