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Finding the Fourth Proportional to 548,930.80, 823,914.60 and 338,978.80

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Solution

The fourth proportional to 548,930.80, 823,914.60 and 338,978.80 is: 508,788.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    548,930.80 : 823,914.60 = 338,978.80 : x
  2. Step 2: Convert to fraction form
    548,930.80/823,914.60 = 338,978.80/x
  3. Step 3: Cross multiply
    548,930.80x = 823,914.60 × 338,978.80
  4. Step 4: Simplify right side
    548,930.80x = 279,289,582,410.48
  5. Step 5: Solve for x
    x = 279,289,582,410.48/548,930.80
  6. Step 6: Final answer
    x = 508,788.33

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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.