Home / 811,771.70-1,217,460.71-338,198.72

Finding the Fourth Proportional to 811,771.70, 1,217,460.71 and 338,198.72

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Solution

The fourth proportional to 811,771.70, 1,217,460.71 and 338,198.72 is: 507,216.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    811,771.70 : 1,217,460.71 = 338,198.72 : x
  2. Step 2: Convert to fraction form
    811,771.70/1,217,460.71 = 338,198.72/x
  3. Step 3: Cross multiply
    811,771.70x = 1,217,460.71 × 338,198.72
  4. Step 4: Simplify right side
    811,771.70x = 411,743,645,993.99
  5. Step 5: Solve for x
    x = 411,743,645,993.99/811,771.70
  6. Step 6: Final answer
    x = 507,216.07

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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.