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Finding the Third Proportional to 306,854 and 656,356

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Solution

The third proportional to 306,854 and 656,356 is: 1,403,935.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    306,854 : 656,356 = 656,356 : x
  2. Step 2: Convert to fraction form
    306,854/656,356 = 656,356/x
  3. Step 3: Cross multiply
    306,854x = 656,356 × 656,356
  4. Step 4: Simplify right side
    306,854x = 430,803,198,736
  5. Step 5: Solve for x
    x = 430,803,198,736/306,854
  6. Step 6: Final answer
    x = 1,403,935.42

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Why These Related Problems?

These problems maintain the same ratio (2.14) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.