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Finding the Third Proportional to 1,313,662.88 and 1,979,890.50

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Solution

The third proportional to 1,313,662.88 and 1,979,890.50 is: 2,983,997.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,313,662.88 : 1,979,890.50 = 1,979,890.50 : x
  2. Step 2: Convert to fraction form
    1,313,662.88/1,979,890.50 = 1,979,890.50/x
  3. Step 3: Cross multiply
    1,313,662.88x = 1,979,890.50 × 1,979,890.50
  4. Step 4: Simplify right side
    1,313,662.88x = 3,919,966,391,990.25
  5. Step 5: Solve for x
    x = 3,919,966,391,990.25/1,313,662.88
  6. Step 6: Final answer
    x = 2,983,997.24

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.