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Finding the Third Proportional to 342,838 and 513,929

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Solution

The third proportional to 342,838 and 513,929 is: 770,401.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    342,838 : 513,929 = 513,929 : x
  2. Step 2: Convert to fraction form
    342,838/513,929 = 513,929/x
  3. Step 3: Cross multiply
    342,838x = 513,929 × 513,929
  4. Step 4: Simplify right side
    342,838x = 264,123,017,041
  5. Step 5: Solve for x
    x = 264,123,017,041/342,838
  6. Step 6: Final answer
    x = 770,401.81

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.