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Finding the Third Proportional to 697,623.75 and 987,410.25

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Solution

The third proportional to 697,623.75 and 987,410.25 is: 1,397,571.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    697,623.75 : 987,410.25 = 987,410.25 : x
  2. Step 2: Convert to fraction form
    697,623.75/987,410.25 = 987,410.25/x
  3. Step 3: Cross multiply
    697,623.75x = 987,410.25 × 987,410.25
  4. Step 4: Simplify right side
    697,623.75x = 974,979,001,805.06
  5. Step 5: Solve for x
    x = 974,979,001,805.06/697,623.75
  6. Step 6: Final answer
    x = 1,397,571.40

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Why These Related Problems?

These problems maintain the same ratio (1.42) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.