Home / 1,188,491.40-1,780,404.30-713,766.60

Finding the Fourth Proportional to 1,188,491.40, 1,780,404.30 and 713,766.60

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Solution

The fourth proportional to 1,188,491.40, 1,780,404.30 and 713,766.60 is: 1,069,248.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,188,491.40 : 1,780,404.30 = 713,766.60 : x
  2. Step 2: Convert to fraction form
    1,188,491.40/1,780,404.30 = 713,766.60/x
  3. Step 3: Cross multiply
    1,188,491.40x = 1,780,404.30 × 713,766.60
  4. Step 4: Simplify right side
    1,188,491.40x = 1,270,793,123,836.38
  5. Step 5: Solve for x
    x = 1,270,793,123,836.38/1,188,491.40
  6. Step 6: Final answer
    x = 1,069,248.90

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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.