Home / 886,540.75-1,329,997.95-287,455.20

Finding the Fourth Proportional to 886,540.75, 1,329,997.95 and 287,455.20

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Solution

The fourth proportional to 886,540.75, 1,329,997.95 and 287,455.20 is: 431,243.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    886,540.75 : 1,329,997.95 = 287,455.20 : x
  2. Step 2: Convert to fraction form
    886,540.75/1,329,997.95 = 287,455.20/x
  3. Step 3: Cross multiply
    886,540.75x = 1,329,997.95 × 287,455.20
  4. Step 4: Simplify right side
    886,540.75x = 382,314,826,716.84
  5. Step 5: Solve for x
    x = 382,314,826,716.84/886,540.75
  6. Step 6: Final answer
    x = 431,243.38

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Double scale
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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.