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Finding the Third Proportional to 3,991,428 and 8,266,355

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Solution

The third proportional to 3,991,428 and 8,266,355 is: 17,119,844.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,991,428 : 8,266,355 = 8,266,355 : x
  2. Step 2: Convert to fraction form
    3,991,428/8,266,355 = 8,266,355/x
  3. Step 3: Cross multiply
    3,991,428x = 8,266,355 × 8,266,355
  4. Step 4: Simplify right side
    3,991,428x = 68,332,624,986,025
  5. Step 5: Solve for x
    x = 68,332,624,986,025/3,991,428
  6. Step 6: Final answer
    x = 17,119,844.07

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Why These Related Problems?

These problems maintain the same ratio (2.07) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.