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Finding the Third Proportional to 434,631 and 664,867.50

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Solution

The third proportional to 434,631 and 664,867.50 is: 1,017,066.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    434,631 : 664,867.50 = 664,867.50 : x
  2. Step 2: Convert to fraction form
    434,631/664,867.50 = 664,867.50/x
  3. Step 3: Cross multiply
    434,631x = 664,867.50 × 664,867.50
  4. Step 4: Simplify right side
    434,631x = 442,048,792,556.25
  5. Step 5: Solve for x
    x = 442,048,792,556.25/434,631
  6. Step 6: Final answer
    x = 1,017,066.87

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Why These Related Problems?

These problems maintain the same ratio (1.53) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.