Home / 579,917,787.20-869,876,680.80-321,928,769.60

Finding the Fourth Proportional to 579,917,787.20, 869,876,680.80 and 321,928,769.60

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Solution

The fourth proportional to 579,917,787.20, 869,876,680.80 and 321,928,769.60 is: 482,893,154.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    579,917,787.20 : 869,876,680.80 = 321,928,769.60 : x
  2. Step 2: Convert to fraction form
    579,917,787.20/869,876,680.80 = 321,928,769.60/x
  3. Step 3: Cross multiply
    579,917,787.20x = 869,876,680.80 × 321,928,769.60
  4. Step 4: Simplify right side
    579,917,787.20x = 280,038,329,553,675,936
  5. Step 5: Solve for x
    x = 280,038,329,553,675,936/579,917,787.20
  6. Step 6: Final answer
    x = 482,893,154.40

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Double scale
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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.