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Finding the Third Proportional to 387,794 and 810,724

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Solution

The third proportional to 387,794 and 810,724 is: 1,694,903.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,794 : 810,724 = 810,724 : x
  2. Step 2: Convert to fraction form
    387,794/810,724 = 810,724/x
  3. Step 3: Cross multiply
    387,794x = 810,724 × 810,724
  4. Step 4: Simplify right side
    387,794x = 657,273,404,176
  5. Step 5: Solve for x
    x = 657,273,404,176/387,794
  6. Step 6: Final answer
    x = 1,694,903.49

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Why These Related Problems?

These problems maintain the same ratio (2.09) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.