Home / 994,090.80-1,491,136.20-520,921.20

Finding the Fourth Proportional to 994,090.80, 1,491,136.20 and 520,921.20

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Solution

The fourth proportional to 994,090.80, 1,491,136.20 and 520,921.20 is: 781,381.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    994,090.80 : 1,491,136.20 = 520,921.20 : x
  2. Step 2: Convert to fraction form
    994,090.80/1,491,136.20 = 520,921.20/x
  3. Step 3: Cross multiply
    994,090.80x = 1,491,136.20 × 520,921.20
  4. Step 4: Simplify right side
    994,090.80x = 776,764,458,667.44
  5. Step 5: Solve for x
    x = 776,764,458,667.44/994,090.80
  6. Step 6: Final answer
    x = 781,381.80

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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.