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Finding the Third Proportional to 393,905 and 573,634

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Solution

The third proportional to 393,905 and 573,634 is: 835,368.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    393,905 : 573,634 = 573,634 : x
  2. Step 2: Convert to fraction form
    393,905/573,634 = 573,634/x
  3. Step 3: Cross multiply
    393,905x = 573,634 × 573,634
  4. Step 4: Simplify right side
    393,905x = 329,055,965,956
  5. Step 5: Solve for x
    x = 329,055,965,956/393,905
  6. Step 6: Final answer
    x = 835,368.85

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Why These Related Problems?

These problems maintain the same ratio (1.46) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.