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Finding the Third Proportional to 1,355,393.63 and 1,987,811.44

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Solution

The third proportional to 1,355,393.63 and 1,987,811.44 is: 2,915,311.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,355,393.63 : 1,987,811.44 = 1,987,811.44 : x
  2. Step 2: Convert to fraction form
    1,355,393.63/1,987,811.44 = 1,987,811.44/x
  3. Step 3: Cross multiply
    1,355,393.63x = 1,987,811.44 × 1,987,811.44
  4. Step 4: Simplify right side
    1,355,393.63x = 3,951,394,311,055.82
  5. Step 5: Solve for x
    x = 3,951,394,311,055.82/1,355,393.63
  6. Step 6: Final answer
    x = 2,915,311.27

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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.