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Finding the Third Proportional to 4,651,978 and 9,867,554

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Solution

The third proportional to 4,651,978 and 9,867,554 is: 20,930,585.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,651,978 : 9,867,554 = 9,867,554 : x
  2. Step 2: Convert to fraction form
    4,651,978/9,867,554 = 9,867,554/x
  3. Step 3: Cross multiply
    4,651,978x = 9,867,554 × 9,867,554
  4. Step 4: Simplify right side
    4,651,978x = 97,368,621,942,916
  5. Step 5: Solve for x
    x = 97,368,621,942,916/4,651,978
  6. Step 6: Final answer
    x = 20,930,585.21

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Why These Related Problems?

These problems maintain the same ratio (2.12) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.