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Finding the Fourth Proportional to 557,034.08, 768,906.72 and 330,679.76

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Solution

The fourth proportional to 557,034.08, 768,906.72 and 330,679.76 is: 456,456.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    557,034.08 : 768,906.72 = 330,679.76 : x
  2. Step 2: Convert to fraction form
    557,034.08/768,906.72 = 330,679.76/x
  3. Step 3: Cross multiply
    557,034.08x = 768,906.72 × 330,679.76
  4. Step 4: Simplify right side
    557,034.08x = 254,261,889,631.99
  5. Step 5: Solve for x
    x = 254,261,889,631.99/557,034.08
  6. Step 6: Final answer
    x = 456,456.61

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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.