Home / 455,668.20-682,190.10-278,521.20

Finding the Fourth Proportional to 455,668.20, 682,190.10 and 278,521.20

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Solution

The fourth proportional to 455,668.20, 682,190.10 and 278,521.20 is: 416,979.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,668.20 : 682,190.10 = 278,521.20 : x
  2. Step 2: Convert to fraction form
    455,668.20/682,190.10 = 278,521.20/x
  3. Step 3: Cross multiply
    455,668.20x = 682,190.10 × 278,521.20
  4. Step 4: Simplify right side
    455,668.20x = 190,004,405,280.12
  5. Step 5: Solve for x
    x = 190,004,405,280.12/455,668.20
  6. Step 6: Final answer
    x = 416,979.73

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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.