Home / 579,115.80-868,716.90-205,090.20

Finding the Fourth Proportional to 579,115.80, 868,716.90 and 205,090.20

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Solution

The fourth proportional to 579,115.80, 868,716.90 and 205,090.20 is: 307,650.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    579,115.80 : 868,716.90 = 205,090.20 : x
  2. Step 2: Convert to fraction form
    579,115.80/868,716.90 = 205,090.20/x
  3. Step 3: Cross multiply
    579,115.80x = 868,716.90 × 205,090.20
  4. Step 4: Simplify right side
    579,115.80x = 178,165,322,764.38
  5. Step 5: Solve for x
    x = 178,165,322,764.38/579,115.80
  6. Step 6: Final answer
    x = 307,650.60

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Double scale
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Similar ratio
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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.