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Finding the Fourth Proportional to 591,995.37, 816,408.48 and 387,971.97

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Solution

The fourth proportional to 591,995.37, 816,408.48 and 387,971.97 is: 535,044.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    591,995.37 : 816,408.48 = 387,971.97 : x
  2. Step 2: Convert to fraction form
    591,995.37/816,408.48 = 387,971.97/x
  3. Step 3: Cross multiply
    591,995.37x = 816,408.48 × 387,971.97
  4. Step 4: Simplify right side
    591,995.37x = 316,743,606,310.31
  5. Step 5: Solve for x
    x = 316,743,606,310.31/591,995.37
  6. Step 6: Final answer
    x = 535,044.06

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.