Home / 856,356.33-1,284,555.30-287,745.57

Finding the Fourth Proportional to 856,356.33, 1,284,555.30 and 287,745.57

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Solution

The fourth proportional to 856,356.33, 1,284,555.30 and 287,745.57 is: 431,625.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    856,356.33 : 1,284,555.30 = 287,745.57 : x
  2. Step 2: Convert to fraction form
    856,356.33/1,284,555.30 = 287,745.57/x
  3. Step 3: Cross multiply
    856,356.33x = 1,284,555.30 × 287,745.57
  4. Step 4: Simplify right side
    856,356.33x = 369,625,096,995.02
  5. Step 5: Solve for x
    x = 369,625,096,995.02/856,356.33
  6. Step 6: Final answer
    x = 431,625.35

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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.