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Finding the Third Proportional to 4,991,178 and 10,218,792

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Solution

The third proportional to 4,991,178 and 10,218,792 is: 20,921,656.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,991,178 : 10,218,792 = 10,218,792 : x
  2. Step 2: Convert to fraction form
    4,991,178/10,218,792 = 10,218,792/x
  3. Step 3: Cross multiply
    4,991,178x = 10,218,792 × 10,218,792
  4. Step 4: Simplify right side
    4,991,178x = 104,423,709,939,264
  5. Step 5: Solve for x
    x = 104,423,709,939,264/4,991,178
  6. Step 6: Final answer
    x = 20,921,656.16

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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.