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Finding the Fourth Proportional to 496,729.50, 685,467.68 and 281,856.76

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Solution

The fourth proportional to 496,729.50, 685,467.68 and 281,856.76 is: 388,951.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    496,729.50 : 685,467.68 = 281,856.76 : x
  2. Step 2: Convert to fraction form
    496,729.50/685,467.68 = 281,856.76/x
  3. Step 3: Cross multiply
    496,729.50x = 685,467.68 × 281,856.76
  4. Step 4: Simplify right side
    496,729.50x = 193,203,699,369.52
  5. Step 5: Solve for x
    x = 193,203,699,369.52/496,729.50
  6. Step 6: Final answer
    x = 388,951.53

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1.5x scale

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.