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Finding the Third Proportional to 657,651 and 891,216

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Solution

The third proportional to 657,651 and 891,216 is: 1,207,731.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    657,651 : 891,216 = 891,216 : x
  2. Step 2: Convert to fraction form
    657,651/891,216 = 891,216/x
  3. Step 3: Cross multiply
    657,651x = 891,216 × 891,216
  4. Step 4: Simplify right side
    657,651x = 794,265,958,656
  5. Step 5: Solve for x
    x = 794,265,958,656/657,651
  6. Step 6: Final answer
    x = 1,207,731.70

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Why These Related Problems?

These problems maintain the same ratio (1.36) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.