Home / 1,280,860.20-1,921,287.72-1,202,915.52

Finding the Fourth Proportional to 1,280,860.20, 1,921,287.72 and 1,202,915.52

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Solution

The fourth proportional to 1,280,860.20, 1,921,287.72 and 1,202,915.52 is: 1,804,370.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,280,860.20 : 1,921,287.72 = 1,202,915.52 : x
  2. Step 2: Convert to fraction form
    1,280,860.20/1,921,287.72 = 1,202,915.52/x
  3. Step 3: Cross multiply
    1,280,860.20x = 1,921,287.72 × 1,202,915.52
  4. Step 4: Simplify right side
    1,280,860.20x = 2,311,146,816,773.41
  5. Step 5: Solve for x
    x = 2,311,146,816,773.41/1,280,860.20
  6. Step 6: Final answer
    x = 1,804,370.86

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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.