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Finding the Fourth Proportional to 496,690.92, 685,434.80 and 281,830.42

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Solution

The fourth proportional to 496,690.92, 685,434.80 and 281,830.42 is: 388,926.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    496,690.92 : 685,434.80 = 281,830.42 : x
  2. Step 2: Convert to fraction form
    496,690.92/685,434.80 = 281,830.42/x
  3. Step 3: Cross multiply
    496,690.92x = 685,434.80 × 281,830.42
  4. Step 4: Simplify right side
    496,690.92x = 193,176,378,799.62
  5. Step 5: Solve for x
    x = 193,176,378,799.62/496,690.92
  6. Step 6: Final answer
    x = 388,926.74

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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.