Home / 579,315.20-868,339.20-205,145.60

Finding the Fourth Proportional to 579,315.20, 868,339.20 and 205,145.60

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Solution

The fourth proportional to 579,315.20, 868,339.20 and 205,145.60 is: 307,494.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    579,315.20 : 868,339.20 = 205,145.60 : x
  2. Step 2: Convert to fraction form
    579,315.20/868,339.20 = 205,145.60/x
  3. Step 3: Cross multiply
    579,315.20x = 868,339.20 × 205,145.60
  4. Step 4: Simplify right side
    579,315.20x = 178,135,966,187.52
  5. Step 5: Solve for x
    x = 178,135,966,187.52/579,315.20
  6. Step 6: Final answer
    x = 307,494.03

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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.