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Finding the Third Proportional to 5,639,484 and 11,921,865

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Solution

The third proportional to 5,639,484 and 11,921,865 is: 25,202,813.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,639,484 : 11,921,865 = 11,921,865 : x
  2. Step 2: Convert to fraction form
    5,639,484/11,921,865 = 11,921,865/x
  3. Step 3: Cross multiply
    5,639,484x = 11,921,865 × 11,921,865
  4. Step 4: Simplify right side
    5,639,484x = 142,130,865,078,225
  5. Step 5: Solve for x
    x = 142,130,865,078,225/5,639,484
  6. Step 6: Final answer
    x = 25,202,813.78

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Why These Related Problems?

These problems maintain the same ratio (2.11) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.