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Finding the Fourth Proportional to 587,572.99, 811,098.78 and 396,844.72

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Solution

The fourth proportional to 587,572.99, 811,098.78 and 396,844.72 is: 547,813.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    587,572.99 : 811,098.78 = 396,844.72 : x
  2. Step 2: Convert to fraction form
    587,572.99/811,098.78 = 396,844.72/x
  3. Step 3: Cross multiply
    587,572.99x = 811,098.78 × 396,844.72
  4. Step 4: Simplify right side
    587,572.99x = 321,880,268,241.44
  5. Step 5: Solve for x
    x = 321,880,268,241.44/587,572.99
  6. Step 6: Final answer
    x = 547,813.25

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.