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Finding the Fourth Proportional to 512,957.80, 769,480.44 and 133,928.83

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Solution

The fourth proportional to 512,957.80, 769,480.44 and 133,928.83 is: 200,904.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    512,957.80 : 769,480.44 = 133,928.83 : x
  2. Step 2: Convert to fraction form
    512,957.80/769,480.44 = 133,928.83/x
  3. Step 3: Cross multiply
    512,957.80x = 769,480.44 × 133,928.83
  4. Step 4: Simplify right side
    512,957.80x = 103,055,615,037.09
  5. Step 5: Solve for x
    x = 103,055,615,037.09/512,957.80
  6. Step 6: Final answer
    x = 200,904.67

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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.