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Finding the Third Proportional to 409,161 and 889,140

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Solution

The third proportional to 409,161 and 889,140 is: 1,932,173.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    409,161 : 889,140 = 889,140 : x
  2. Step 2: Convert to fraction form
    409,161/889,140 = 889,140/x
  3. Step 3: Cross multiply
    409,161x = 889,140 × 889,140
  4. Step 4: Simplify right side
    409,161x = 790,569,939,600
  5. Step 5: Solve for x
    x = 790,569,939,600/409,161
  6. Step 6: Final answer
    x = 1,932,173.25

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Why These Related Problems?

These problems maintain the same ratio (2.17) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.