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Finding the Third Proportional to 4,990,986 and 10,217,985

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Solution

The third proportional to 4,990,986 and 10,217,985 is: 20,919,156.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,990,986 : 10,217,985 = 10,217,985 : x
  2. Step 2: Convert to fraction form
    4,990,986/10,217,985 = 10,217,985/x
  3. Step 3: Cross multiply
    4,990,986x = 10,217,985 × 10,217,985
  4. Step 4: Simplify right side
    4,990,986x = 104,407,217,460,225
  5. Step 5: Solve for x
    x = 104,407,217,460,225/4,990,986
  6. Step 6: Final answer
    x = 20,919,156.55

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Why These Related Problems?

These problems maintain the same ratio (2.05) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.