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Finding the Third Proportional to 309,873.75 and 656,957.25

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Solution

The third proportional to 309,873.75 and 656,957.25 is: 1,392,802.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    309,873.75 : 656,957.25 = 656,957.25 : x
  2. Step 2: Convert to fraction form
    309,873.75/656,957.25 = 656,957.25/x
  3. Step 3: Cross multiply
    309,873.75x = 656,957.25 × 656,957.25
  4. Step 4: Simplify right side
    309,873.75x = 431,592,828,327.56
  5. Step 5: Solve for x
    x = 431,592,828,327.56/309,873.75
  6. Step 6: Final answer
    x = 1,392,802.16

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Why These Related Problems?

These problems maintain the same ratio (2.12) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.