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Finding the Fourth Proportional to 586,651.56, 809,579.16 and 318,379.56

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Solution

The fourth proportional to 586,651.56, 809,579.16 and 318,379.56 is: 439,363.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    586,651.56 : 809,579.16 = 318,379.56 : x
  2. Step 2: Convert to fraction form
    586,651.56/809,579.16 = 318,379.56/x
  3. Step 3: Cross multiply
    586,651.56x = 809,579.16 × 318,379.56
  4. Step 4: Simplify right side
    586,651.56x = 257,753,456,745.97
  5. Step 5: Solve for x
    x = 257,753,456,745.97/586,651.56
  6. Step 6: Final answer
    x = 439,363.80

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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.