Home / 853,708.87-1,178,339.57-491,169.88

Finding the Fourth Proportional to 853,708.87, 1,178,339.57 and 491,169.88

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Solution

The fourth proportional to 853,708.87, 1,178,339.57 and 491,169.88 is: 677,941.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    853,708.87 : 1,178,339.57 = 491,169.88 : x
  2. Step 2: Convert to fraction form
    853,708.87/1,178,339.57 = 491,169.88/x
  3. Step 3: Cross multiply
    853,708.87x = 1,178,339.57 × 491,169.88
  4. Step 4: Simplify right side
    853,708.87x = 578,764,905,196.15
  5. Step 5: Solve for x
    x = 578,764,905,196.15/853,708.87
  6. Step 6: Final answer
    x = 677,941.77

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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.