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Finding the Third Proportional to 307,520 and 668,864

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Solution

The third proportional to 307,520 and 668,864 is: 1,454,796.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    307,520 : 668,864 = 668,864 : x
  2. Step 2: Convert to fraction form
    307,520/668,864 = 668,864/x
  3. Step 3: Cross multiply
    307,520x = 668,864 × 668,864
  4. Step 4: Simplify right side
    307,520x = 447,379,050,496
  5. Step 5: Solve for x
    x = 447,379,050,496/307,520
  6. Step 6: Final answer
    x = 1,454,796.60

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Why These Related Problems?

These problems maintain the same ratio (2.18) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.