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Finding the Third Proportional to 393,556 and 552,246

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Solution

The third proportional to 393,556 and 552,246 is: 774,923.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    393,556 : 552,246 = 552,246 : x
  2. Step 2: Convert to fraction form
    393,556/552,246 = 552,246/x
  3. Step 3: Cross multiply
    393,556x = 552,246 × 552,246
  4. Step 4: Simplify right side
    393,556x = 304,975,644,516
  5. Step 5: Solve for x
    x = 304,975,644,516/393,556
  6. Step 6: Final answer
    x = 774,923.12

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.