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Finding the Fourth Proportional to 418,634.60, 587,138.20 and 418,634.60

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Solution

The fourth proportional to 418,634.60, 587,138.20 and 418,634.60 is: 587,138.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    418,634.60 : 587,138.20 = 418,634.60 : x
  2. Step 2: Convert to fraction form
    418,634.60/587,138.20 = 418,634.60/x
  3. Step 3: Cross multiply
    418,634.60x = 587,138.20 × 418,634.60
  4. Step 4: Simplify right side
    418,634.60x = 245,796,365,501.72
  5. Step 5: Solve for x
    x = 245,796,365,501.72/418,634.60
  6. Step 6: Final answer
    x = 587,138.20

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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.