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Finding the Third Proportional to 2,589,390.91 and 3,920,069.36

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Solution

The third proportional to 2,589,390.91 and 3,920,069.36 is: 5,934,578.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,589,390.91 : 3,920,069.36 = 3,920,069.36 : x
  2. Step 2: Convert to fraction form
    2,589,390.91/3,920,069.36 = 3,920,069.36/x
  3. Step 3: Cross multiply
    2,589,390.91x = 3,920,069.36 × 3,920,069.36
  4. Step 4: Simplify right side
    2,589,390.91x = 15,366,943,751,685.57
  5. Step 5: Solve for x
    x = 15,366,943,751,685.57/2,589,390.91
  6. Step 6: Final answer
    x = 5,934,578.54

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.