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Finding the Third Proportional to 1,991,221.50 and 4,369,515

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Solution

The third proportional to 1,991,221.50 and 4,369,515 is: 9,588,416.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,991,221.50 : 4,369,515 = 4,369,515 : x
  2. Step 2: Convert to fraction form
    1,991,221.50/4,369,515 = 4,369,515/x
  3. Step 3: Cross multiply
    1,991,221.50x = 4,369,515 × 4,369,515
  4. Step 4: Simplify right side
    1,991,221.50x = 19,092,661,335,225
  5. Step 5: Solve for x
    x = 19,092,661,335,225/1,991,221.50
  6. Step 6: Final answer
    x = 9,588,416.63

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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.