Home / 591,188.09-815,972.45-387,120.49

Finding the Fourth Proportional to 591,188.09, 815,972.45 and 387,120.49

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Solution

The fourth proportional to 591,188.09, 815,972.45 and 387,120.49 is: 534,313.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    591,188.09 : 815,972.45 = 387,120.49 : x
  2. Step 2: Convert to fraction form
    591,188.09/815,972.45 = 387,120.49/x
  3. Step 3: Cross multiply
    591,188.09x = 815,972.45 × 387,120.49
  4. Step 4: Simplify right side
    591,188.09x = 315,879,650,694.97
  5. Step 5: Solve for x
    x = 315,879,650,694.97/591,188.09
  6. Step 6: Final answer
    x = 534,313.29

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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.