Home / 811,218.43-1,216,855.59-278,734.96

Finding the Fourth Proportional to 811,218.43, 1,216,855.59 and 278,734.96

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Solution

The fourth proportional to 811,218.43, 1,216,855.59 and 278,734.96 is: 418,112.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    811,218.43 : 1,216,855.59 = 278,734.96 : x
  2. Step 2: Convert to fraction form
    811,218.43/1,216,855.59 = 278,734.96/x
  3. Step 3: Cross multiply
    811,218.43x = 1,216,855.59 × 278,734.96
  4. Step 4: Simplify right side
    811,218.43x = 339,180,194,204.43
  5. Step 5: Solve for x
    x = 339,180,194,204.43/811,218.43
  6. Step 6: Final answer
    x = 418,112.04

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1.5x scale

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.