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Finding the Third Proportional to 687,012.75 and 1,009,991.25

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Solution

The third proportional to 687,012.75 and 1,009,991.25 is: 1,484,808.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    687,012.75 : 1,009,991.25 = 1,009,991.25 : x
  2. Step 2: Convert to fraction form
    687,012.75/1,009,991.25 = 1,009,991.25/x
  3. Step 3: Cross multiply
    687,012.75x = 1,009,991.25 × 1,009,991.25
  4. Step 4: Simplify right side
    687,012.75x = 1,020,082,325,076.56
  5. Step 5: Solve for x
    x = 1,020,082,325,076.56/687,012.75
  6. Step 6: Final answer
    x = 1,484,808.43

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Why These Related Problems?

These problems maintain the same ratio (1.47) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.