Home / 879,189.19-1,318,769.30-280,142.25

Finding the Fourth Proportional to 879,189.19, 1,318,769.30 and 280,142.25

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Solution

The fourth proportional to 879,189.19, 1,318,769.30 and 280,142.25 is: 420,208.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    879,189.19 : 1,318,769.30 = 280,142.25 : x
  2. Step 2: Convert to fraction form
    879,189.19/1,318,769.30 = 280,142.25/x
  3. Step 3: Cross multiply
    879,189.19x = 1,318,769.30 × 280,142.25
  4. Step 4: Simplify right side
    879,189.19x = 369,442,994,687.90
  5. Step 5: Solve for x
    x = 369,442,994,687.90/879,189.19
  6. Step 6: Final answer
    x = 420,208.76

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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.