Home / 811,176.72-1,216,793.34-278,693.88

Finding the Fourth Proportional to 811,176.72, 1,216,793.34 and 278,693.88

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Solution

The fourth proportional to 811,176.72, 1,216,793.34 and 278,693.88 is: 418,050.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    811,176.72 : 1,216,793.34 = 278,693.88 : x
  2. Step 2: Convert to fraction form
    811,176.72/1,216,793.34 = 278,693.88/x
  3. Step 3: Cross multiply
    811,176.72x = 1,216,793.34 × 278,693.88
  4. Step 4: Simplify right side
    811,176.72x = 339,112,857,082.76
  5. Step 5: Solve for x
    x = 339,112,857,082.76/811,176.72
  6. Step 6: Final answer
    x = 418,050.53

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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.