Home / 640,629.92-961,299.57-383,831.44

Finding the Fourth Proportional to 640,629.92, 961,299.57 and 383,831.44

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Solution

The fourth proportional to 640,629.92, 961,299.57 and 383,831.44 is: 575,959.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    640,629.92 : 961,299.57 = 383,831.44 : x
  2. Step 2: Convert to fraction form
    640,629.92/961,299.57 = 383,831.44/x
  3. Step 3: Cross multiply
    640,629.92x = 961,299.57 × 383,831.44
  4. Step 4: Simplify right side
    640,629.92x = 368,976,998,224.48
  5. Step 5: Solve for x
    x = 368,976,998,224.48/640,629.92
  6. Step 6: Final answer
    x = 575,959.67

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.