Home / 994,145.40-1,491,436.80-320,257.80

Finding the Fourth Proportional to 994,145.40, 1,491,436.80 and 320,257.80

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Solution

The fourth proportional to 994,145.40, 1,491,436.80 and 320,257.80 is: 480,457.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    994,145.40 : 1,491,436.80 = 320,257.80 : x
  2. Step 2: Convert to fraction form
    994,145.40/1,491,436.80 = 320,257.80/x
  3. Step 3: Cross multiply
    994,145.40x = 1,491,436.80 × 320,257.80
  4. Step 4: Simplify right side
    994,145.40x = 477,644,268,407.04
  5. Step 5: Solve for x
    x = 477,644,268,407.04/994,145.40
  6. Step 6: Final answer
    x = 480,457.15

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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.