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Finding the Third Proportional to 1,279,471.89 and 2,783,145.45

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Solution

The third proportional to 1,279,471.89 and 2,783,145.45 is: 6,053,981.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,279,471.89 : 2,783,145.45 = 2,783,145.45 : x
  2. Step 2: Convert to fraction form
    1,279,471.89/2,783,145.45 = 2,783,145.45/x
  3. Step 3: Cross multiply
    1,279,471.89x = 2,783,145.45 × 2,783,145.45
  4. Step 4: Simplify right side
    1,279,471.89x = 7,745,898,569,763.71
  5. Step 5: Solve for x
    x = 7,745,898,569,763.71/1,279,471.89
  6. Step 6: Final answer
    x = 6,053,981.06

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Why These Related Problems?

These problems maintain the same ratio (2.18) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.