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Finding the Third Proportional to 260,607 and 412,989

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Solution

The third proportional to 260,607 and 412,989 is: 654,471.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,607 : 412,989 = 412,989 : x
  2. Step 2: Convert to fraction form
    260,607/412,989 = 412,989/x
  3. Step 3: Cross multiply
    260,607x = 412,989 × 412,989
  4. Step 4: Simplify right side
    260,607x = 170,559,914,121
  5. Step 5: Solve for x
    x = 170,559,914,121/260,607
  6. Step 6: Final answer
    x = 654,471.73

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Why These Related Problems?

These problems maintain the same ratio (1.58) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.