Home / 446,469.20-669,811.80-130,936.40

Finding the Fourth Proportional to 446,469.20, 669,811.80 and 130,936.40

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Solution

The fourth proportional to 446,469.20, 669,811.80 and 130,936.40 is: 196,436.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    446,469.20 : 669,811.80 = 130,936.40 : x
  2. Step 2: Convert to fraction form
    446,469.20/669,811.80 = 130,936.40/x
  3. Step 3: Cross multiply
    446,469.20x = 669,811.80 × 130,936.40
  4. Step 4: Simplify right side
    446,469.20x = 87,702,745,769.52
  5. Step 5: Solve for x
    x = 87,702,745,769.52/446,469.20
  6. Step 6: Final answer
    x = 196,436.27

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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.