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Finding the Fourth Proportional to 638,625.28, 957,584.58 and 253,984.60

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Solution

The fourth proportional to 638,625.28, 957,584.58 and 253,984.60 is: 380,836.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,625.28 : 957,584.58 = 253,984.60 : x
  2. Step 2: Convert to fraction form
    638,625.28/957,584.58 = 253,984.60/x
  3. Step 3: Cross multiply
    638,625.28x = 957,584.58 × 253,984.60
  4. Step 4: Simplify right side
    638,625.28x = 243,211,736,517.47
  5. Step 5: Solve for x
    x = 243,211,736,517.47/638,625.28
  6. Step 6: Final answer
    x = 380,836.37

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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.