Home / 455,220.80-682,831.20-305,921.60

Finding the Fourth Proportional to 455,220.80, 682,831.20 and 305,921.60

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Solution

The fourth proportional to 455,220.80, 682,831.20 and 305,921.60 is: 458,882.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,220.80 : 682,831.20 = 305,921.60 : x
  2. Step 2: Convert to fraction form
    455,220.80/682,831.20 = 305,921.60/x
  3. Step 3: Cross multiply
    455,220.80x = 682,831.20 × 305,921.60
  4. Step 4: Simplify right side
    455,220.80x = 208,892,813,233.92
  5. Step 5: Solve for x
    x = 208,892,813,233.92/455,220.80
  6. Step 6: Final answer
    x = 458,882.40

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1.5x scale

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.