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Finding the Third Proportional to 385,245 and 827,838

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Solution

The third proportional to 385,245 and 827,838 is: 1,778,908.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,245 : 827,838 = 827,838 : x
  2. Step 2: Convert to fraction form
    385,245/827,838 = 827,838/x
  3. Step 3: Cross multiply
    385,245x = 827,838 × 827,838
  4. Step 4: Simplify right side
    385,245x = 685,315,754,244
  5. Step 5: Solve for x
    x = 685,315,754,244/385,245
  6. Step 6: Final answer
    x = 1,778,908.89

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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.