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Finding the Third Proportional to 378,484 and 826,627

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Solution

The third proportional to 378,484 and 826,627 is: 1,805,392.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    378,484 : 826,627 = 826,627 : x
  2. Step 2: Convert to fraction form
    378,484/826,627 = 826,627/x
  3. Step 3: Cross multiply
    378,484x = 826,627 × 826,627
  4. Step 4: Simplify right side
    378,484x = 683,312,197,129
  5. Step 5: Solve for x
    x = 683,312,197,129/378,484
  6. Step 6: Final answer
    x = 1,805,392.56

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Why These Related Problems?

These problems maintain the same ratio (2.18) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.