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Finding the Third Proportional to 4,311,489 and 9,388,431

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Solution

The third proportional to 4,311,489 and 9,388,431 is: 20,443,664.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,311,489 : 9,388,431 = 9,388,431 : x
  2. Step 2: Convert to fraction form
    4,311,489/9,388,431 = 9,388,431/x
  3. Step 3: Cross multiply
    4,311,489x = 9,388,431 × 9,388,431
  4. Step 4: Simplify right side
    4,311,489x = 88,142,636,641,761
  5. Step 5: Solve for x
    x = 88,142,636,641,761/4,311,489
  6. Step 6: Final answer
    x = 20,443,664.97

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Why These Related Problems?

These problems maintain the same ratio (2.18) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.