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Finding the Third Proportional to 393,910 and 573,641

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Solution

The third proportional to 393,910 and 573,641 is: 835,378.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    393,910 : 573,641 = 573,641 : x
  2. Step 2: Convert to fraction form
    393,910/573,641 = 573,641/x
  3. Step 3: Cross multiply
    393,910x = 573,641 × 573,641
  4. Step 4: Simplify right side
    393,910x = 329,063,996,881
  5. Step 5: Solve for x
    x = 329,063,996,881/393,910
  6. Step 6: Final answer
    x = 835,378.63

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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.