Home / 819,898.15-1,229,811.81-280,202.62

Finding the Fourth Proportional to 819,898.15, 1,229,811.81 and 280,202.62

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Solution

The fourth proportional to 819,898.15, 1,229,811.81 and 280,202.62 is: 420,291.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    819,898.15 : 1,229,811.81 = 280,202.62 : x
  2. Step 2: Convert to fraction form
    819,898.15/1,229,811.81 = 280,202.62/x
  3. Step 3: Cross multiply
    819,898.15x = 1,229,811.81 × 280,202.62
  4. Step 4: Simplify right side
    819,898.15x = 344,596,491,268.94
  5. Step 5: Solve for x
    x = 344,596,491,268.94/819,898.15
  6. Step 6: Final answer
    x = 420,291.83

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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.