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Finding the Third Proportional to 12,979,732 and 20,177,578

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Solution

The third proportional to 12,979,732 and 20,177,578 is: 31,366,953.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,979,732 : 20,177,578 = 20,177,578 : x
  2. Step 2: Convert to fraction form
    12,979,732/20,177,578 = 20,177,578/x
  3. Step 3: Cross multiply
    12,979,732x = 20,177,578 × 20,177,578
  4. Step 4: Simplify right side
    12,979,732x = 407,134,653,946,084
  5. Step 5: Solve for x
    x = 407,134,653,946,084/12,979,732
  6. Step 6: Final answer
    x = 31,366,953.80

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Why These Related Problems?

These problems maintain the same ratio (1.55) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.