Home / 1,115,831.37-1,540,588.77-857,247.78

Finding the Fourth Proportional to 1,115,831.37, 1,540,588.77 and 857,247.78

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Solution

The fourth proportional to 1,115,831.37, 1,540,588.77 and 857,247.78 is: 1,183,571.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,115,831.37 : 1,540,588.77 = 857,247.78 : x
  2. Step 2: Convert to fraction form
    1,115,831.37/1,540,588.77 = 857,247.78/x
  3. Step 3: Cross multiply
    1,115,831.37x = 1,540,588.77 × 857,247.78
  4. Step 4: Simplify right side
    1,115,831.37x = 1,320,666,302,975.43
  5. Step 5: Solve for x
    x = 1,320,666,302,975.43/1,115,831.37
  6. Step 6: Final answer
    x = 1,183,571.58

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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.