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Finding the Third Proportional to 276,920 and 605,090

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Solution

The third proportional to 276,920 and 605,090 is: 1,322,164.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    276,920 : 605,090 = 605,090 : x
  2. Step 2: Convert to fraction form
    276,920/605,090 = 605,090/x
  3. Step 3: Cross multiply
    276,920x = 605,090 × 605,090
  4. Step 4: Simplify right side
    276,920x = 366,133,908,100
  5. Step 5: Solve for x
    x = 366,133,908,100/276,920
  6. Step 6: Final answer
    x = 1,322,164.91

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Why These Related Problems?

These problems maintain the same ratio (2.19) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.