Home / 645,815.20-968,607.60-408,733.60

Finding the Fourth Proportional to 645,815.20, 968,607.60 and 408,733.60

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Solution

The fourth proportional to 645,815.20, 968,607.60 and 408,733.60 is: 613,027.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    645,815.20 : 968,607.60 = 408,733.60 : x
  2. Step 2: Convert to fraction form
    645,815.20/968,607.60 = 408,733.60/x
  3. Step 3: Cross multiply
    645,815.20x = 968,607.60 × 408,733.60
  4. Step 4: Simplify right side
    645,815.20x = 395,902,471,335.36
  5. Step 5: Solve for x
    x = 395,902,471,335.36/645,815.20
  6. Step 6: Final answer
    x = 613,027.49

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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.