Home / 645,928.15-968,331.72-325,812.80

Finding the Fourth Proportional to 645,928.15, 968,331.72 and 325,812.80

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Solution

The fourth proportional to 645,928.15, 968,331.72 and 325,812.80 is: 488,436.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    645,928.15 : 968,331.72 = 325,812.80 : x
  2. Step 2: Convert to fraction form
    645,928.15/968,331.72 = 325,812.80/x
  3. Step 3: Cross multiply
    645,928.15x = 968,331.72 × 325,812.80
  4. Step 4: Simplify right side
    645,928.15x = 315,494,869,022.02
  5. Step 5: Solve for x
    x = 315,494,869,022.02/645,928.15
  6. Step 6: Final answer
    x = 488,436.48

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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.