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Finding the Fourth Proportional to 865,672.85, 1,298,648.81 and 266,633.73

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Solution

The fourth proportional to 865,672.85, 1,298,648.81 and 266,633.73 is: 399,993.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    865,672.85 : 1,298,648.81 = 266,633.73 : x
  2. Step 2: Convert to fraction form
    865,672.85/1,298,648.81 = 266,633.73/x
  3. Step 3: Cross multiply
    865,672.85x = 1,298,648.81 × 266,633.73
  4. Step 4: Simplify right side
    865,672.85x = 346,263,576,836.95
  5. Step 5: Solve for x
    x = 346,263,576,836.95/865,672.85
  6. Step 6: Final answer
    x = 399,993.57

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.