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Finding the Third Proportional to 4,129,380 and 8,891,480

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Solution

The third proportional to 4,129,380 and 8,891,480 is: 19,145,347.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,129,380 : 8,891,480 = 8,891,480 : x
  2. Step 2: Convert to fraction form
    4,129,380/8,891,480 = 8,891,480/x
  3. Step 3: Cross multiply
    4,129,380x = 8,891,480 × 8,891,480
  4. Step 4: Simplify right side
    4,129,380x = 79,058,416,590,400
  5. Step 5: Solve for x
    x = 79,058,416,590,400/4,129,380
  6. Step 6: Final answer
    x = 19,145,347.87

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Why These Related Problems?

These problems maintain the same ratio (2.15) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.