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Finding the Third Proportional to 8,928,909 and 19,379,970

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Solution

The third proportional to 8,928,909 and 19,379,970 is: 42,063,732.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,928,909 : 19,379,970 = 19,379,970 : x
  2. Step 2: Convert to fraction form
    8,928,909/19,379,970 = 19,379,970/x
  3. Step 3: Cross multiply
    8,928,909x = 19,379,970 × 19,379,970
  4. Step 4: Simplify right side
    8,928,909x = 375,583,237,200,900
  5. Step 5: Solve for x
    x = 375,583,237,200,900/8,928,909
  6. Step 6: Final answer
    x = 42,063,732.22

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Why These Related Problems?

These problems maintain the same ratio (2.17) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.