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Finding the Third Proportional to 7,719,738 and 11,355,021

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Solution

The third proportional to 7,719,738 and 11,355,021 is: 16,702,186.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,719,738 : 11,355,021 = 11,355,021 : x
  2. Step 2: Convert to fraction form
    7,719,738/11,355,021 = 11,355,021/x
  3. Step 3: Cross multiply
    7,719,738x = 11,355,021 × 11,355,021
  4. Step 4: Simplify right side
    7,719,738x = 128,936,501,910,441
  5. Step 5: Solve for x
    x = 128,936,501,910,441/7,719,738
  6. Step 6: Final answer
    x = 16,702,186.25

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Why These Related Problems?

These problems maintain the same ratio (1.47) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.