Home / 821,234.56-1,231,854.69-252,611.80

Finding the Fourth Proportional to 821,234.56, 1,231,854.69 and 252,611.80

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Solution

The fourth proportional to 821,234.56, 1,231,854.69 and 252,611.80 is: 378,918.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    821,234.56 : 1,231,854.69 = 252,611.80 : x
  2. Step 2: Convert to fraction form
    821,234.56/1,231,854.69 = 252,611.80/x
  3. Step 3: Cross multiply
    821,234.56x = 1,231,854.69 × 252,611.80
  4. Step 4: Simplify right side
    821,234.56x = 311,181,024,420.07
  5. Step 5: Solve for x
    x = 311,181,024,420.07/821,234.56
  6. Step 6: Final answer
    x = 378,918.57

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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.