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Finding the Third Proportional to 7,836,409 and 11,872,909.50

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Solution

The third proportional to 7,836,409 and 11,872,909.50 is: 17,988,594.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,836,409 : 11,872,909.50 = 11,872,909.50 : x
  2. Step 2: Convert to fraction form
    7,836,409/11,872,909.50 = 11,872,909.50/x
  3. Step 3: Cross multiply
    7,836,409x = 11,872,909.50 × 11,872,909.50
  4. Step 4: Simplify right side
    7,836,409x = 140,965,979,995,190.25
  5. Step 5: Solve for x
    x = 140,965,979,995,190.25/7,836,409
  6. Step 6: Final answer
    x = 17,988,594.01

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Why These Related Problems?

These problems maintain the same ratio (1.52) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.