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Finding the Fourth Proportional to 489,953.88, 733,647.78 and 320,942.52

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Solution

The fourth proportional to 489,953.88, 733,647.78 and 320,942.52 is: 480,573.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    489,953.88 : 733,647.78 = 320,942.52 : x
  2. Step 2: Convert to fraction form
    489,953.88/733,647.78 = 320,942.52/x
  3. Step 3: Cross multiply
    489,953.88x = 733,647.78 × 320,942.52
  4. Step 4: Simplify right side
    489,953.88x = 235,458,767,305.61
  5. Step 5: Solve for x
    x = 235,458,767,305.61/489,953.88
  6. Step 6: Final answer
    x = 480,573.33

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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.