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Finding the Fourth Proportional to 386,469.40, 541,425.80 and 386,469.40

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Solution

The fourth proportional to 386,469.40, 541,425.80 and 386,469.40 is: 541,425.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,469.40 : 541,425.80 = 386,469.40 : x
  2. Step 2: Convert to fraction form
    386,469.40/541,425.80 = 386,469.40/x
  3. Step 3: Cross multiply
    386,469.40x = 541,425.80 × 386,469.40
  4. Step 4: Simplify right side
    386,469.40x = 209,244,504,070.52
  5. Step 5: Solve for x
    x = 209,244,504,070.52/386,469.40
  6. Step 6: Final answer
    x = 541,425.80

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.