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Finding the Third Proportional to 991,398 and 2,126,622

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Solution

The third proportional to 991,398 and 2,126,622 is: 4,561,761.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    991,398 : 2,126,622 = 2,126,622 : x
  2. Step 2: Convert to fraction form
    991,398/2,126,622 = 2,126,622/x
  3. Step 3: Cross multiply
    991,398x = 2,126,622 × 2,126,622
  4. Step 4: Simplify right side
    991,398x = 4,522,521,130,884
  5. Step 5: Solve for x
    x = 4,522,521,130,884/991,398
  6. Step 6: Final answer
    x = 4,561,761.40

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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.