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Finding the Third Proportional to 9,121,620 and 19,820,312

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Solution

The third proportional to 9,121,620 and 19,820,312 is: 43,067,434.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,121,620 : 19,820,312 = 19,820,312 : x
  2. Step 2: Convert to fraction form
    9,121,620/19,820,312 = 19,820,312/x
  3. Step 3: Cross multiply
    9,121,620x = 19,820,312 × 19,820,312
  4. Step 4: Simplify right side
    9,121,620x = 392,844,767,777,344
  5. Step 5: Solve for x
    x = 392,844,767,777,344/9,121,620
  6. Step 6: Final answer
    x = 43,067,434.05

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Why These Related Problems?

These problems maintain the same ratio (2.17) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.