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Finding the Fourth Proportional to 811,784.76, 1,217,793.78 and 250,863

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Solution

The fourth proportional to 811,784.76, 1,217,793.78 and 250,863 is: 376,330.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    811,784.76 : 1,217,793.78 = 250,863 : x
  2. Step 2: Convert to fraction form
    811,784.76/1,217,793.78 = 250,863/x
  3. Step 3: Cross multiply
    811,784.76x = 1,217,793.78 × 250,863
  4. Step 4: Simplify right side
    811,784.76x = 305,499,401,032.14
  5. Step 5: Solve for x
    x = 305,499,401,032.14/811,784.76
  6. Step 6: Final answer
    x = 376,330.54

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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.