Home / 645,908.20-968,747.10-408,826.60

Finding the Fourth Proportional to 645,908.20, 968,747.10 and 408,826.60

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Solution

The fourth proportional to 645,908.20, 968,747.10 and 408,826.60 is: 613,166.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    645,908.20 : 968,747.10 = 408,826.60 : x
  2. Step 2: Convert to fraction form
    645,908.20/968,747.10 = 408,826.60/x
  3. Step 3: Cross multiply
    645,908.20x = 968,747.10 × 408,826.60
  4. Step 4: Simplify right side
    645,908.20x = 396,049,583,152.86
  5. Step 5: Solve for x
    x = 396,049,583,152.86/645,908.20
  6. Step 6: Final answer
    x = 613,166.98

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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.