Home / 858,781.73-1,288,374.89-259,747.85

Finding the Fourth Proportional to 858,781.73, 1,288,374.89 and 259,747.85

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Solution

The fourth proportional to 858,781.73, 1,288,374.89 and 259,747.85 is: 389,682.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    858,781.73 : 1,288,374.89 = 259,747.85 : x
  2. Step 2: Convert to fraction form
    858,781.73/1,288,374.89 = 259,747.85/x
  3. Step 3: Cross multiply
    858,781.73x = 1,288,374.89 × 259,747.85
  4. Step 4: Simplify right side
    858,781.73x = 334,652,599,930.87
  5. Step 5: Solve for x
    x = 334,652,599,930.87/858,781.73
  6. Step 6: Final answer
    x = 389,682.95

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1.5x scale

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.