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Finding the Third Proportional to 299,423.25 and 687,199.50

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Solution

The third proportional to 299,423.25 and 687,199.50 is: 1,577,175.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    299,423.25 : 687,199.50 = 687,199.50 : x
  2. Step 2: Convert to fraction form
    299,423.25/687,199.50 = 687,199.50/x
  3. Step 3: Cross multiply
    299,423.25x = 687,199.50 × 687,199.50
  4. Step 4: Simplify right side
    299,423.25x = 472,243,152,800.25
  5. Step 5: Solve for x
    x = 472,243,152,800.25/299,423.25
  6. Step 6: Final answer
    x = 1,577,175.96

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Why These Related Problems?

These problems maintain the same ratio (2.30) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.