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Finding the Third Proportional to 378,487 and 826,633

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Solution

The third proportional to 378,487 and 826,633 is: 1,805,404.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    378,487 : 826,633 = 826,633 : x
  2. Step 2: Convert to fraction form
    378,487/826,633 = 826,633/x
  3. Step 3: Cross multiply
    378,487x = 826,633 × 826,633
  4. Step 4: Simplify right side
    378,487x = 683,322,116,689
  5. Step 5: Solve for x
    x = 683,322,116,689/378,487
  6. Step 6: Final answer
    x = 1,805,404.46

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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.