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Finding the Fourth Proportional to 611,858.10, 844,270.38 and 339,921.66

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Solution

The fourth proportional to 611,858.10, 844,270.38 and 339,921.66 is: 469,039.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    611,858.10 : 844,270.38 = 339,921.66 : x
  2. Step 2: Convert to fraction form
    611,858.10/844,270.38 = 339,921.66/x
  3. Step 3: Cross multiply
    611,858.10x = 844,270.38 × 339,921.66
  4. Step 4: Simplify right side
    611,858.10x = 286,985,789,058.43
  5. Step 5: Solve for x
    x = 286,985,789,058.43/611,858.10
  6. Step 6: Final answer
    x = 469,039.78

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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.