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Finding the Third Proportional to 393,919 and 573,655

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Solution

The third proportional to 393,919 and 573,655 is: 835,400.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    393,919 : 573,655 = 573,655 : x
  2. Step 2: Convert to fraction form
    393,919/573,655 = 573,655/x
  3. Step 3: Cross multiply
    393,919x = 573,655 × 573,655
  4. Step 4: Simplify right side
    393,919x = 329,080,059,025
  5. Step 5: Solve for x
    x = 329,080,059,025/393,919
  6. Step 6: Final answer
    x = 835,400.32

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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.