Home / 856,390.25-1,284,872.16-280,040.11

Finding the Fourth Proportional to 856,390.25, 1,284,872.16 and 280,040.11

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Solution

The fourth proportional to 856,390.25, 1,284,872.16 and 280,040.11 is: 420,153.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    856,390.25 : 1,284,872.16 = 280,040.11 : x
  2. Step 2: Convert to fraction form
    856,390.25/1,284,872.16 = 280,040.11/x
  3. Step 3: Cross multiply
    856,390.25x = 1,284,872.16 × 280,040.11
  4. Step 4: Simplify right side
    856,390.25x = 359,815,738,860.31
  5. Step 5: Solve for x
    x = 359,815,738,860.31/856,390.25
  6. Step 6: Final answer
    x = 420,153.94

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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.