Home / 497,831.25-687,058.97-306,839.73

Finding the Fourth Proportional to 497,831.25, 687,058.97 and 306,839.73

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Solution

The fourth proportional to 497,831.25, 687,058.97 and 306,839.73 is: 423,470.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    497,831.25 : 687,058.97 = 306,839.73 : x
  2. Step 2: Convert to fraction form
    497,831.25/687,058.97 = 306,839.73/x
  3. Step 3: Cross multiply
    497,831.25x = 687,058.97 × 306,839.73
  4. Step 4: Simplify right side
    497,831.25x = 210,816,987,314.68
  5. Step 5: Solve for x
    x = 210,816,987,314.68/497,831.25
  6. Step 6: Final answer
    x = 423,470.78

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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.