Home / 579,917,786.20-869,876,679.30-321,928,768.60

Finding the Fourth Proportional to 579,917,786.20, 869,876,679.30 and 321,928,768.60

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Solution

The fourth proportional to 579,917,786.20, 869,876,679.30 and 321,928,768.60 is: 482,893,152.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    579,917,786.20 : 869,876,679.30 = 321,928,768.60 : x
  2. Step 2: Convert to fraction form
    579,917,786.20/869,876,679.30 = 321,928,768.60/x
  3. Step 3: Cross multiply
    579,917,786.20x = 869,876,679.30 × 321,928,768.60
  4. Step 4: Simplify right side
    579,917,786.20x = 280,038,328,200,906,112
  5. Step 5: Solve for x
    x = 280,038,328,200,906,112/579,917,786.20
  6. Step 6: Final answer
    x = 482,893,152.90

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Double scale
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Similar ratio
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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.