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Finding the Third Proportional to 1,989,797.25 and 3,155,828.44

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Solution

The third proportional to 1,989,797.25 and 3,155,828.44 is: 5,005,159.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,989,797.25 : 3,155,828.44 = 3,155,828.44 : x
  2. Step 2: Convert to fraction form
    1,989,797.25/3,155,828.44 = 3,155,828.44/x
  3. Step 3: Cross multiply
    1,989,797.25x = 3,155,828.44 × 3,155,828.44
  4. Step 4: Simplify right side
    1,989,797.25x = 9,959,253,126,933.69
  5. Step 5: Solve for x
    x = 9,959,253,126,933.69/1,989,797.25
  6. Step 6: Final answer
    x = 5,005,159.76

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Why These Related Problems?

These problems maintain the same ratio (1.59) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.