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Finding the Third Proportional to 414,216 and 905,970

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Solution

The third proportional to 414,216 and 905,970 is: 1,981,530.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    414,216 : 905,970 = 905,970 : x
  2. Step 2: Convert to fraction form
    414,216/905,970 = 905,970/x
  3. Step 3: Cross multiply
    414,216x = 905,970 × 905,970
  4. Step 4: Simplify right side
    414,216x = 820,781,640,900
  5. Step 5: Solve for x
    x = 820,781,640,900/414,216
  6. Step 6: Final answer
    x = 1,981,530.51

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Why These Related Problems?

These problems maintain the same ratio (2.19) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.