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Finding the Fourth Proportional to 790,885.62, 1,186,083 and 285,380.96

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Solution

The fourth proportional to 790,885.62, 1,186,083 and 285,380.96 is: 427,982.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    790,885.62 : 1,186,083 = 285,380.96 : x
  2. Step 2: Convert to fraction form
    790,885.62/1,186,083 = 285,380.96/x
  3. Step 3: Cross multiply
    790,885.62x = 1,186,083 × 285,380.96
  4. Step 4: Simplify right side
    790,885.62x = 338,485,499,249.27
  5. Step 5: Solve for x
    x = 338,485,499,249.27/790,885.62
  6. Step 6: Final answer
    x = 427,982.87

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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.