Home / 1,203,147.30-1,659,722.27-815,831.69

Finding the Fourth Proportional to 1,203,147.30, 1,659,722.27 and 815,831.69

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Solution

The fourth proportional to 1,203,147.30, 1,659,722.27 and 815,831.69 is: 1,125,426.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,203,147.30 : 1,659,722.27 = 815,831.69 : x
  2. Step 2: Convert to fraction form
    1,203,147.30/1,659,722.27 = 815,831.69/x
  3. Step 3: Cross multiply
    1,203,147.30x = 1,659,722.27 × 815,831.69
  4. Step 4: Simplify right side
    1,203,147.30x = 1,354,054,012,086.97
  5. Step 5: Solve for x
    x = 1,354,054,012,086.97/1,203,147.30
  6. Step 6: Final answer
    x = 1,125,426.63

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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.