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Finding the Fourth Proportional to 621,893.88, 858,204 and 349,940.52

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Solution

The fourth proportional to 621,893.88, 858,204 and 349,940.52 is: 482,912.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    621,893.88 : 858,204 = 349,940.52 : x
  2. Step 2: Convert to fraction form
    621,893.88/858,204 = 349,940.52/x
  3. Step 3: Cross multiply
    621,893.88x = 858,204 × 349,940.52
  4. Step 4: Simplify right side
    621,893.88x = 300,320,354,026.08
  5. Step 5: Solve for x
    x = 300,320,354,026.08/621,893.88
  6. Step 6: Final answer
    x = 482,912.54

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1.5x scale

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.