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Finding the Third Proportional to 405,621.75 and 587,519.25

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Solution

The third proportional to 405,621.75 and 587,519.25 is: 850,987.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    405,621.75 : 587,519.25 = 587,519.25 : x
  2. Step 2: Convert to fraction form
    405,621.75/587,519.25 = 587,519.25/x
  3. Step 3: Cross multiply
    405,621.75x = 587,519.25 × 587,519.25
  4. Step 4: Simplify right side
    405,621.75x = 345,178,869,120.56
  5. Step 5: Solve for x
    x = 345,178,869,120.56/405,621.75
  6. Step 6: Final answer
    x = 850,987.08

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Why These Related Problems?

These problems maintain the same ratio (1.45) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.