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Finding the Fourth Proportional to 641,725.05, 885,591.01 and 351,331.71

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Solution

The fourth proportional to 641,725.05, 885,591.01 and 351,331.71 is: 484,843.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    641,725.05 : 885,591.01 = 351,331.71 : x
  2. Step 2: Convert to fraction form
    641,725.05/885,591.01 = 351,331.71/x
  3. Step 3: Cross multiply
    641,725.05x = 885,591.01 × 351,331.71
  4. Step 4: Simplify right side
    641,725.05x = 311,136,203,025.60
  5. Step 5: Solve for x
    x = 311,136,203,025.60/641,725.05
  6. Step 6: Final answer
    x = 484,843.48

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.