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Finding the Third Proportional to 378,246 and 819,531

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Solution

The third proportional to 378,246 and 819,531 is: 1,775,646.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    378,246 : 819,531 = 819,531 : x
  2. Step 2: Convert to fraction form
    378,246/819,531 = 819,531/x
  3. Step 3: Cross multiply
    378,246x = 819,531 × 819,531
  4. Step 4: Simplify right side
    378,246x = 671,631,059,961
  5. Step 5: Solve for x
    x = 671,631,059,961/378,246
  6. Step 6: Final answer
    x = 1,775,646.17

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Why These Related Problems?

These problems maintain the same ratio (2.17) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.