Home / 858,907.26-1,287,960.90-318,787.38

Finding the Fourth Proportional to 858,907.26, 1,287,960.90 and 318,787.38

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Solution

The fourth proportional to 858,907.26, 1,287,960.90 and 318,787.38 is: 478,032.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    858,907.26 : 1,287,960.90 = 318,787.38 : x
  2. Step 2: Convert to fraction form
    858,907.26/1,287,960.90 = 318,787.38/x
  3. Step 3: Cross multiply
    858,907.26x = 1,287,960.90 × 318,787.38
  4. Step 4: Simplify right side
    858,907.26x = 410,585,680,853.44
  5. Step 5: Solve for x
    x = 410,585,680,853.44/858,907.26
  6. Step 6: Final answer
    x = 478,032.61

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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.