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Finding the Fourth Proportional to 496,651.08, 685,450.72 and 278,884.20

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Solution

The fourth proportional to 496,651.08, 685,450.72 and 278,884.20 is: 384,900.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    496,651.08 : 685,450.72 = 278,884.20 : x
  2. Step 2: Convert to fraction form
    496,651.08/685,450.72 = 278,884.20/x
  3. Step 3: Cross multiply
    496,651.08x = 685,450.72 × 278,884.20
  4. Step 4: Simplify right side
    496,651.08x = 191,161,375,686.62
  5. Step 5: Solve for x
    x = 191,161,375,686.62/496,651.08
  6. Step 6: Final answer
    x = 384,900.76

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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.