Home / 853,769.87-1,178,247.77-491,248.80

Finding the Fourth Proportional to 853,769.87, 1,178,247.77 and 491,248.80

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Solution

The fourth proportional to 853,769.87, 1,178,247.77 and 491,248.80 is: 677,949.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    853,769.87 : 1,178,247.77 = 491,248.80 : x
  2. Step 2: Convert to fraction form
    853,769.87/1,178,247.77 = 491,248.80/x
  3. Step 3: Cross multiply
    853,769.87x = 1,178,247.77 × 491,248.80
  4. Step 4: Simplify right side
    853,769.87x = 578,812,802,501.12
  5. Step 5: Solve for x
    x = 578,812,802,501.12/853,769.87
  6. Step 6: Final answer
    x = 677,949.44

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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.