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Finding the Third Proportional to 2,149,228.69 and 2,920,396.78

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Solution

The third proportional to 2,149,228.69 and 2,920,396.78 is: 3,968,268.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,149,228.69 : 2,920,396.78 = 2,920,396.78 : x
  2. Step 2: Convert to fraction form
    2,149,228.69/2,920,396.78 = 2,920,396.78/x
  3. Step 3: Cross multiply
    2,149,228.69x = 2,920,396.78 × 2,920,396.78
  4. Step 4: Simplify right side
    2,149,228.69x = 8,528,717,359,935.36
  5. Step 5: Solve for x
    x = 8,528,717,359,935.36/2,149,228.69
  6. Step 6: Final answer
    x = 3,968,268.90

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Why These Related Problems?

These problems maintain the same ratio (1.36) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.