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Finding the Third Proportional to 378,768 and 810,070

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Solution

The third proportional to 378,768 and 810,070 is: 1,732,494.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    378,768 : 810,070 = 810,070 : x
  2. Step 2: Convert to fraction form
    378,768/810,070 = 810,070/x
  3. Step 3: Cross multiply
    378,768x = 810,070 × 810,070
  4. Step 4: Simplify right side
    378,768x = 656,213,404,900
  5. Step 5: Solve for x
    x = 656,213,404,900/378,768
  6. Step 6: Final answer
    x = 1,732,494.31

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Why These Related Problems?

These problems maintain the same ratio (2.14) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.