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Finding the Third Proportional to 4,991,178 and 10,218,794

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Solution

The third proportional to 4,991,178 and 10,218,794 is: 20,921,664.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,991,178 : 10,218,794 = 10,218,794 : x
  2. Step 2: Convert to fraction form
    4,991,178/10,218,794 = 10,218,794/x
  3. Step 3: Cross multiply
    4,991,178x = 10,218,794 × 10,218,794
  4. Step 4: Simplify right side
    4,991,178x = 104,423,750,814,436
  5. Step 5: Solve for x
    x = 104,423,750,814,436/4,991,178
  6. Step 6: Final answer
    x = 20,921,664.35

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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.