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Finding the Third Proportional to 4,237,780 and 9,197,990

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Solution

The third proportional to 4,237,780 and 9,197,990 is: 19,963,995.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,237,780 : 9,197,990 = 9,197,990 : x
  2. Step 2: Convert to fraction form
    4,237,780/9,197,990 = 9,197,990/x
  3. Step 3: Cross multiply
    4,237,780x = 9,197,990 × 9,197,990
  4. Step 4: Simplify right side
    4,237,780x = 84,603,020,040,100
  5. Step 5: Solve for x
    x = 84,603,020,040,100/4,237,780
  6. Step 6: Final answer
    x = 19,963,995.31

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Why These Related Problems?

These problems maintain the same ratio (2.17) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.