Home / 1,428,136.40-2,140,709.88-481,179.92

Finding the Fourth Proportional to 1,428,136.40, 2,140,709.88 and 481,179.92

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Solution

The fourth proportional to 1,428,136.40, 2,140,709.88 and 481,179.92 is: 721,266.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,428,136.40 : 2,140,709.88 = 481,179.92 : x
  2. Step 2: Convert to fraction form
    1,428,136.40/2,140,709.88 = 481,179.92/x
  3. Step 3: Cross multiply
    1,428,136.40x = 2,140,709.88 × 481,179.92
  4. Step 4: Simplify right side
    1,428,136.40x = 1,030,066,608,801.61
  5. Step 5: Solve for x
    x = 1,030,066,608,801.61/1,428,136.40
  6. Step 6: Final answer
    x = 721,266.27

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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.