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Finding the Third Proportional to 516,426 and 743,805

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Solution

The third proportional to 516,426 and 743,805 is: 1,071,297.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    516,426 : 743,805 = 743,805 : x
  2. Step 2: Convert to fraction form
    516,426/743,805 = 743,805/x
  3. Step 3: Cross multiply
    516,426x = 743,805 × 743,805
  4. Step 4: Simplify right side
    516,426x = 553,245,878,025
  5. Step 5: Solve for x
    x = 553,245,878,025/516,426
  6. Step 6: Final answer
    x = 1,071,297.49

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Why These Related Problems?

These problems maintain the same ratio (1.44) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.