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Finding the Third Proportional to 389,621 and 587,010

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Solution

The third proportional to 389,621 and 587,010 is: 884,399.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,621 : 587,010 = 587,010 : x
  2. Step 2: Convert to fraction form
    389,621/587,010 = 587,010/x
  3. Step 3: Cross multiply
    389,621x = 587,010 × 587,010
  4. Step 4: Simplify right side
    389,621x = 344,580,740,100
  5. Step 5: Solve for x
    x = 344,580,740,100/389,621
  6. Step 6: Final answer
    x = 884,399.81

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.