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Finding the Fourth Proportional to 483,615.84, 725,422.48 and 128,629.92

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Solution

The fourth proportional to 483,615.84, 725,422.48 and 128,629.92 is: 192,944.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    483,615.84 : 725,422.48 = 128,629.92 : x
  2. Step 2: Convert to fraction form
    483,615.84/725,422.48 = 128,629.92/x
  3. Step 3: Cross multiply
    483,615.84x = 725,422.48 × 128,629.92
  4. Step 4: Simplify right side
    483,615.84x = 93,311,035,568.60
  5. Step 5: Solve for x
    x = 93,311,035,568.60/483,615.84
  6. Step 6: Final answer
    x = 192,944.54

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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.