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Finding the Fourth Proportional to 496,910.35, 685,684.77 and 279,143.47

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Solution

The fourth proportional to 496,910.35, 685,684.77 and 279,143.47 is: 385,189.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    496,910.35 : 685,684.77 = 279,143.47 : x
  2. Step 2: Convert to fraction form
    496,910.35/685,684.77 = 279,143.47/x
  3. Step 3: Cross multiply
    496,910.35x = 685,684.77 × 279,143.47
  4. Step 4: Simplify right side
    496,910.35x = 191,404,422,595.53
  5. Step 5: Solve for x
    x = 191,404,422,595.53/496,910.35
  6. Step 6: Final answer
    x = 385,189.05

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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.