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Finding the Third Proportional to 326,640 and 513,288

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Solution

The third proportional to 326,640 and 513,288 is: 806,590.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    326,640 : 513,288 = 513,288 : x
  2. Step 2: Convert to fraction form
    326,640/513,288 = 513,288/x
  3. Step 3: Cross multiply
    326,640x = 513,288 × 513,288
  4. Step 4: Simplify right side
    326,640x = 263,464,570,944
  5. Step 5: Solve for x
    x = 263,464,570,944/326,640
  6. Step 6: Final answer
    x = 806,590.04

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Why These Related Problems?

These problems maintain the same ratio (1.57) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.