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Finding the Third Proportional to 4,589,556.19 and 9,989,799.19

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Solution

The third proportional to 4,589,556.19 and 9,989,799.19 is: 21,744,169.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,589,556.19 : 9,989,799.19 = 9,989,799.19 : x
  2. Step 2: Convert to fraction form
    4,589,556.19/9,989,799.19 = 9,989,799.19/x
  3. Step 3: Cross multiply
    4,589,556.19x = 9,989,799.19 × 9,989,799.19
  4. Step 4: Simplify right side
    4,589,556.19x = 99,796,087,806,575.66
  5. Step 5: Solve for x
    x = 99,796,087,806,575.66/4,589,556.19
  6. Step 6: Final answer
    x = 21,744,169.53

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Why These Related Problems?

These problems maintain the same ratio (2.18) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.