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Finding the Third Proportional to 7,872,228 and 12,854,639.25

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Solution

The third proportional to 7,872,228 and 12,854,639.25 is: 20,990,468.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,872,228 : 12,854,639.25 = 12,854,639.25 : x
  2. Step 2: Convert to fraction form
    7,872,228/12,854,639.25 = 12,854,639.25/x
  3. Step 3: Cross multiply
    7,872,228x = 12,854,639.25 × 12,854,639.25
  4. Step 4: Simplify right side
    7,872,228x = 165,241,750,247,640.56
  5. Step 5: Solve for x
    x = 165,241,750,247,640.56/7,872,228
  6. Step 6: Final answer
    x = 20,990,468.04

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Why These Related Problems?

These problems maintain the same ratio (1.63) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.