Home / 451,690.80-677,536.20-408,145.20

Finding the Fourth Proportional to 451,690.80, 677,536.20 and 408,145.20

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Solution

The fourth proportional to 451,690.80, 677,536.20 and 408,145.20 is: 612,217.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    451,690.80 : 677,536.20 = 408,145.20 : x
  2. Step 2: Convert to fraction form
    451,690.80/677,536.20 = 408,145.20/x
  3. Step 3: Cross multiply
    451,690.80x = 677,536.20 × 408,145.20
  4. Step 4: Simplify right side
    451,690.80x = 276,533,147,856.24
  5. Step 5: Solve for x
    x = 276,533,147,856.24/451,690.80
  6. Step 6: Final answer
    x = 612,217.80

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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.