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Finding the Third Proportional to 399,604 and 836,148

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Solution

The third proportional to 399,604 and 836,148 is: 1,749,590.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    399,604 : 836,148 = 836,148 : x
  2. Step 2: Convert to fraction form
    399,604/836,148 = 836,148/x
  3. Step 3: Cross multiply
    399,604x = 836,148 × 836,148
  4. Step 4: Simplify right side
    399,604x = 699,143,477,904
  5. Step 5: Solve for x
    x = 699,143,477,904/399,604
  6. Step 6: Final answer
    x = 1,749,590.79

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Why These Related Problems?

These problems maintain the same ratio (2.09) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.