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Finding the Fourth Proportional to 611,845.83, 844,346.57 and 339,939

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Solution

The fourth proportional to 611,845.83, 844,346.57 and 339,939 is: 469,115.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    611,845.83 : 844,346.57 = 339,939 : x
  2. Step 2: Convert to fraction form
    611,845.83/844,346.57 = 339,939/x
  3. Step 3: Cross multiply
    611,845.83x = 844,346.57 × 339,939
  4. Step 4: Simplify right side
    611,845.83x = 287,026,326,959.54
  5. Step 5: Solve for x
    x = 287,026,326,959.54/611,845.83
  6. Step 6: Final answer
    x = 469,115.44

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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.