Home / 451,628.80-677,443.20-378,145.60

Finding the Fourth Proportional to 451,628.80, 677,443.20 and 378,145.60

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Solution

The fourth proportional to 451,628.80, 677,443.20 and 378,145.60 is: 567,218.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    451,628.80 : 677,443.20 = 378,145.60 : x
  2. Step 2: Convert to fraction form
    451,628.80/677,443.20 = 378,145.60/x
  3. Step 3: Cross multiply
    451,628.80x = 677,443.20 × 378,145.60
  4. Step 4: Simplify right side
    451,628.80x = 256,172,165,329.92
  5. Step 5: Solve for x
    x = 256,172,165,329.92/451,628.80
  6. Step 6: Final answer
    x = 567,218.40

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Similar ratio
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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.