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Finding the Third Proportional to 8,721,917 and 12,997,791

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Solution

The third proportional to 8,721,917 and 12,997,791 is: 19,369,889.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,721,917 : 12,997,791 = 12,997,791 : x
  2. Step 2: Convert to fraction form
    8,721,917/12,997,791 = 12,997,791/x
  3. Step 3: Cross multiply
    8,721,917x = 12,997,791 × 12,997,791
  4. Step 4: Simplify right side
    8,721,917x = 168,942,570,879,681
  5. Step 5: Solve for x
    x = 168,942,570,879,681/8,721,917
  6. Step 6: Final answer
    x = 19,369,889.77

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.