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Finding the Third Proportional to 8,315,256 and 12,438,990

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Solution

The third proportional to 8,315,256 and 12,438,990 is: 18,607,782.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,315,256 : 12,438,990 = 12,438,990 : x
  2. Step 2: Convert to fraction form
    8,315,256/12,438,990 = 12,438,990/x
  3. Step 3: Cross multiply
    8,315,256x = 12,438,990 × 12,438,990
  4. Step 4: Simplify right side
    8,315,256x = 154,728,472,220,100
  5. Step 5: Solve for x
    x = 154,728,472,220,100/8,315,256
  6. Step 6: Final answer
    x = 18,607,782.16

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.