Home / 687,571.77-948,831.26-381,632.34

Finding the Fourth Proportional to 687,571.77, 948,831.26 and 381,632.34

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Solution

The fourth proportional to 687,571.77, 948,831.26 and 381,632.34 is: 526,642.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    687,571.77 : 948,831.26 = 381,632.34 : x
  2. Step 2: Convert to fraction form
    687,571.77/948,831.26 = 381,632.34/x
  3. Step 3: Cross multiply
    687,571.77x = 948,831.26 × 381,632.34
  4. Step 4: Simplify right side
    687,571.77x = 362,104,692,110.79
  5. Step 5: Solve for x
    x = 362,104,692,110.79/687,571.77
  6. Step 6: Final answer
    x = 526,642.76

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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.