Home / 490,812.62-677,514.38-309,488.45

Finding the Fourth Proportional to 490,812.62, 677,514.38 and 309,488.45

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Solution

The fourth proportional to 490,812.62, 677,514.38 and 309,488.45 is: 427,215.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    490,812.62 : 677,514.38 = 309,488.45 : x
  2. Step 2: Convert to fraction form
    490,812.62/677,514.38 = 309,488.45/x
  3. Step 3: Cross multiply
    490,812.62x = 677,514.38 × 309,488.45
  4. Step 4: Simplify right side
    490,812.62x = 209,682,870,383.90
  5. Step 5: Solve for x
    x = 209,682,870,383.90/490,812.62
  6. Step 6: Final answer
    x = 427,215.73

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.