Home / 1,086,642.30-1,629,890.55-287,906.70

Finding the Fourth Proportional to 1,086,642.30, 1,629,890.55 and 287,906.70

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Solution

The fourth proportional to 1,086,642.30, 1,629,890.55 and 287,906.70 is: 431,840.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,086,642.30 : 1,629,890.55 = 287,906.70 : x
  2. Step 2: Convert to fraction form
    1,086,642.30/1,629,890.55 = 287,906.70/x
  3. Step 3: Cross multiply
    1,086,642.30x = 1,629,890.55 × 287,906.70
  4. Step 4: Simplify right side
    1,086,642.30x = 469,256,409,611.69
  5. Step 5: Solve for x
    x = 469,256,409,611.69/1,086,642.30
  6. Step 6: Final answer
    x = 431,840.74

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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.