Home / 853,770.87-1,178,249.15-491,249.80

Finding the Fourth Proportional to 853,770.87, 1,178,249.15 and 491,249.80

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Solution

The fourth proportional to 853,770.87, 1,178,249.15 and 491,249.80 is: 677,950.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    853,770.87 : 1,178,249.15 = 491,249.80 : x
  2. Step 2: Convert to fraction form
    853,770.87/1,178,249.15 = 491,249.80/x
  3. Step 3: Cross multiply
    853,770.87x = 1,178,249.15 × 491,249.80
  4. Step 4: Simplify right side
    853,770.87x = 578,814,659,287.67
  5. Step 5: Solve for x
    x = 578,814,659,287.67/853,770.87
  6. Step 6: Final answer
    x = 677,950.82

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Double scale
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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.