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Finding the Third Proportional to 4,289,378 and 9,428,876

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Solution

The third proportional to 4,289,378 and 9,428,876 is: 20,726,478.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,289,378 : 9,428,876 = 9,428,876 : x
  2. Step 2: Convert to fraction form
    4,289,378/9,428,876 = 9,428,876/x
  3. Step 3: Cross multiply
    4,289,378x = 9,428,876 × 9,428,876
  4. Step 4: Simplify right side
    4,289,378x = 88,903,702,623,376
  5. Step 5: Solve for x
    x = 88,903,702,623,376/4,289,378
  6. Step 6: Final answer
    x = 20,726,478.90

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Why These Related Problems?

These problems maintain the same ratio (2.20) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.