Home / 811,217.43-1,216,854.09-278,733.96

Finding the Fourth Proportional to 811,217.43, 1,216,854.09 and 278,733.96

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Solution

The fourth proportional to 811,217.43, 1,216,854.09 and 278,733.96 is: 418,110.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    811,217.43 : 1,216,854.09 = 278,733.96 : x
  2. Step 2: Convert to fraction form
    811,217.43/1,216,854.09 = 278,733.96/x
  3. Step 3: Cross multiply
    811,217.43x = 1,216,854.09 × 278,733.96
  4. Step 4: Simplify right side
    811,217.43x = 339,178,559,247.90
  5. Step 5: Solve for x
    x = 339,178,559,247.90/811,217.43
  6. Step 6: Final answer
    x = 418,110.54

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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.