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Finding the Fourth Proportional to 515,150.40, 772,725.60 and 488,906.40

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Solution

The fourth proportional to 515,150.40, 772,725.60 and 488,906.40 is: 733,359.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    515,150.40 : 772,725.60 = 488,906.40 : x
  2. Step 2: Convert to fraction form
    515,150.40/772,725.60 = 488,906.40/x
  3. Step 3: Cross multiply
    515,150.40x = 772,725.60 × 488,906.40
  4. Step 4: Simplify right side
    515,150.40x = 377,790,491,283.84
  5. Step 5: Solve for x
    x = 377,790,491,283.84/515,150.40
  6. Step 6: Final answer
    x = 733,359.60

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Double scale
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Similar ratio
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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.