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Finding the Third Proportional to 8,639,210 and 18,905,620

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Solution

The third proportional to 8,639,210 and 18,905,620 is: 41,372,124.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,639,210 : 18,905,620 = 18,905,620 : x
  2. Step 2: Convert to fraction form
    8,639,210/18,905,620 = 18,905,620/x
  3. Step 3: Cross multiply
    8,639,210x = 18,905,620 × 18,905,620
  4. Step 4: Simplify right side
    8,639,210x = 357,422,467,584,400
  5. Step 5: Solve for x
    x = 357,422,467,584,400/8,639,210
  6. Step 6: Final answer
    x = 41,372,124.02

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Why These Related Problems?

These problems maintain the same ratio (2.19) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.