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Finding the Third Proportional to 393,921 and 573,658

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Solution

The third proportional to 393,921 and 573,658 is: 835,404.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    393,921 : 573,658 = 573,658 : x
  2. Step 2: Convert to fraction form
    393,921/573,658 = 573,658/x
  3. Step 3: Cross multiply
    393,921x = 573,658 × 573,658
  4. Step 4: Simplify right side
    393,921x = 329,083,500,964
  5. Step 5: Solve for x
    x = 329,083,500,964/393,921
  6. Step 6: Final answer
    x = 835,404.82

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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.