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Finding the Fourth Proportional to 2,619,966.72, 3,929,949.84 and 726,708.24

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Solution

The fourth proportional to 2,619,966.72, 3,929,949.84 and 726,708.24 is: 1,090,062.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,619,966.72 : 3,929,949.84 = 726,708.24 : x
  2. Step 2: Convert to fraction form
    2,619,966.72/3,929,949.84 = 726,708.24/x
  3. Step 3: Cross multiply
    2,619,966.72x = 3,929,949.84 × 726,708.24
  4. Step 4: Simplify right side
    2,619,966.72x = 2,855,926,931,514.68
  5. Step 5: Solve for x
    x = 2,855,926,931,514.68/2,619,966.72
  6. Step 6: Final answer
    x = 1,090,062.29

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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.