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Finding the Third Proportional to 385,684 and 843,656

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Solution

The third proportional to 385,684 and 843,656 is: 1,845,436.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,684 : 843,656 = 843,656 : x
  2. Step 2: Convert to fraction form
    385,684/843,656 = 843,656/x
  3. Step 3: Cross multiply
    385,684x = 843,656 × 843,656
  4. Step 4: Simplify right side
    385,684x = 711,755,446,336
  5. Step 5: Solve for x
    x = 711,755,446,336/385,684
  6. Step 6: Final answer
    x = 1,845,436.80

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Why These Related Problems?

These problems maintain the same ratio (2.19) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.