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Finding the Fourth Proportional to 447,725.20, 671,587.80 and 398,736.40

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Solution

The fourth proportional to 447,725.20, 671,587.80 and 398,736.40 is: 598,104.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    447,725.20 : 671,587.80 = 398,736.40 : x
  2. Step 2: Convert to fraction form
    447,725.20/671,587.80 = 398,736.40/x
  3. Step 3: Cross multiply
    447,725.20x = 671,587.80 × 398,736.40
  4. Step 4: Simplify right side
    447,725.20x = 267,786,501,655.92
  5. Step 5: Solve for x
    x = 267,786,501,655.92/447,725.20
  6. Step 6: Final answer
    x = 598,104.60

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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.