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Finding the Fourth Proportional to 496,596.63, 685,255.95 and 278,755.44

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Solution

The fourth proportional to 496,596.63, 685,255.95 and 278,755.44 is: 384,655.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    496,596.63 : 685,255.95 = 278,755.44 : x
  2. Step 2: Convert to fraction form
    496,596.63/685,255.95 = 278,755.44/x
  3. Step 3: Cross multiply
    496,596.63x = 685,255.95 × 278,755.44
  4. Step 4: Simplify right side
    496,596.63x = 191,018,823,854.87
  5. Step 5: Solve for x
    x = 191,018,823,854.87/496,596.63
  6. Step 6: Final answer
    x = 384,655.90

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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.