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Finding the Fourth Proportional to 496,604.52, 685,266.80 and 278,763.30

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Solution

The fourth proportional to 496,604.52, 685,266.80 and 278,763.30 is: 384,666.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    496,604.52 : 685,266.80 = 278,763.30 : x
  2. Step 2: Convert to fraction form
    496,604.52/685,266.80 = 278,763.30/x
  3. Step 3: Cross multiply
    496,604.52x = 685,266.80 × 278,763.30
  4. Step 4: Simplify right side
    496,604.52x = 191,027,234,548.44
  5. Step 5: Solve for x
    x = 191,027,234,548.44/496,604.52
  6. Step 6: Final answer
    x = 384,666.73

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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.