Home / 886,871.12-1,329,961.40-287,687.28

Finding the Fourth Proportional to 886,871.12, 1,329,961.40 and 287,687.28

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Solution

The fourth proportional to 886,871.12, 1,329,961.40 and 287,687.28 is: 431,418.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    886,871.12 : 1,329,961.40 = 287,687.28 : x
  2. Step 2: Convert to fraction form
    886,871.12/1,329,961.40 = 287,687.28/x
  3. Step 3: Cross multiply
    886,871.12x = 1,329,961.40 × 287,687.28
  4. Step 4: Simplify right side
    886,871.12x = 382,612,977,670.99
  5. Step 5: Solve for x
    x = 382,612,977,670.99/886,871.12
  6. Step 6: Final answer
    x = 431,418.92

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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.