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Finding the Third Proportional to 7,872,237 and 12,854,655

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Solution

The third proportional to 7,872,237 and 12,854,655 is: 20,990,495.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,872,237 : 12,854,655 = 12,854,655 : x
  2. Step 2: Convert to fraction form
    7,872,237/12,854,655 = 12,854,655/x
  3. Step 3: Cross multiply
    7,872,237x = 12,854,655 × 12,854,655
  4. Step 4: Simplify right side
    7,872,237x = 165,242,155,169,025
  5. Step 5: Solve for x
    x = 165,242,155,169,025/7,872,237
  6. Step 6: Final answer
    x = 20,990,495.48

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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.