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Finding the Third Proportional to 3,990,940.88 and 8,754,429.38

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Solution

The third proportional to 3,990,940.88 and 8,754,429.38 is: 19,203,500.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,990,940.88 : 8,754,429.38 = 8,754,429.38 : x
  2. Step 2: Convert to fraction form
    3,990,940.88/8,754,429.38 = 8,754,429.38/x
  3. Step 3: Cross multiply
    3,990,940.88x = 8,754,429.38 × 8,754,429.38
  4. Step 4: Simplify right side
    3,990,940.88x = 76,640,033,681,862.89
  5. Step 5: Solve for x
    x = 76,640,033,681,862.89/3,990,940.88
  6. Step 6: Final answer
    x = 19,203,500.15

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Why These Related Problems?

These problems maintain the same ratio (2.19) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.