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Finding the Third Proportional to 4,189,842 and 8,999,739

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Solution

The third proportional to 4,189,842 and 8,999,739 is: 19,331,349.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,189,842 : 8,999,739 = 8,999,739 : x
  2. Step 2: Convert to fraction form
    4,189,842/8,999,739 = 8,999,739/x
  3. Step 3: Cross multiply
    4,189,842x = 8,999,739 × 8,999,739
  4. Step 4: Simplify right side
    4,189,842x = 80,995,302,068,121
  5. Step 5: Solve for x
    x = 80,995,302,068,121/4,189,842
  6. Step 6: Final answer
    x = 19,331,349.98

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Why These Related Problems?

These problems maintain the same ratio (2.15) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.