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Finding the Third Proportional to 551,631 and 857,679

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Solution

The third proportional to 551,631 and 857,679 is: 1,333,524.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    551,631 : 857,679 = 857,679 : x
  2. Step 2: Convert to fraction form
    551,631/857,679 = 857,679/x
  3. Step 3: Cross multiply
    551,631x = 857,679 × 857,679
  4. Step 4: Simplify right side
    551,631x = 735,613,267,041
  5. Step 5: Solve for x
    x = 735,613,267,041/551,631
  6. Step 6: Final answer
    x = 1,333,524.16

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Why These Related Problems?

These problems maintain the same ratio (1.55) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.