Home / 821,635.20-1,231,665.48-347,668.56

Finding the Fourth Proportional to 821,635.20, 1,231,665.48 and 347,668.56

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Solution

The fourth proportional to 821,635.20, 1,231,665.48 and 347,668.56 is: 521,169.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    821,635.20 : 1,231,665.48 = 347,668.56 : x
  2. Step 2: Convert to fraction form
    821,635.20/1,231,665.48 = 347,668.56/x
  3. Step 3: Cross multiply
    821,635.20x = 1,231,665.48 × 347,668.56
  4. Step 4: Simplify right side
    821,635.20x = 428,211,363,833.31
  5. Step 5: Solve for x
    x = 428,211,363,833.31/821,635.20
  6. Step 6: Final answer
    x = 521,169.69

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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.