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Finding the Third Proportional to 3,939,787 and 8,626,913

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Solution

The third proportional to 3,939,787 and 8,626,913 is: 18,890,266.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,939,787 : 8,626,913 = 8,626,913 : x
  2. Step 2: Convert to fraction form
    3,939,787/8,626,913 = 8,626,913/x
  3. Step 3: Cross multiply
    3,939,787x = 8,626,913 × 8,626,913
  4. Step 4: Simplify right side
    3,939,787x = 74,423,627,909,569
  5. Step 5: Solve for x
    x = 74,423,627,909,569/3,939,787
  6. Step 6: Final answer
    x = 18,890,266.89

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Why These Related Problems?

These problems maintain the same ratio (2.19) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.