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Finding the Fourth Proportional to 576,471.90, 863,541.45 and 399,179.10

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Solution

The fourth proportional to 576,471.90, 863,541.45 and 399,179.10 is: 597,960.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    576,471.90 : 863,541.45 = 399,179.10 : x
  2. Step 2: Convert to fraction form
    576,471.90/863,541.45 = 399,179.10/x
  3. Step 3: Cross multiply
    576,471.90x = 863,541.45 × 399,179.10
  4. Step 4: Simplify right side
    576,471.90x = 344,707,698,823.70
  5. Step 5: Solve for x
    x = 344,707,698,823.70/576,471.90
  6. Step 6: Final answer
    x = 597,960.97

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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.