Home / 455,149.20-682,723.80-278,002.20

Finding the Fourth Proportional to 455,149.20, 682,723.80 and 278,002.20

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Solution

The fourth proportional to 455,149.20, 682,723.80 and 278,002.20 is: 417,003.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,149.20 : 682,723.80 = 278,002.20 : x
  2. Step 2: Convert to fraction form
    455,149.20/682,723.80 = 278,002.20/x
  3. Step 3: Cross multiply
    455,149.20x = 682,723.80 × 278,002.20
  4. Step 4: Simplify right side
    455,149.20x = 189,798,718,392.36
  5. Step 5: Solve for x
    x = 189,798,718,392.36/455,149.20
  6. Step 6: Final answer
    x = 417,003.30

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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.