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Finding the Fourth Proportional to 539,620.78, 809,596.11 and 323,718.78

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Solution

The fourth proportional to 539,620.78, 809,596.11 and 323,718.78 is: 485,677.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    539,620.78 : 809,596.11 = 323,718.78 : x
  2. Step 2: Convert to fraction form
    539,620.78/809,596.11 = 323,718.78/x
  3. Step 3: Cross multiply
    539,620.78x = 809,596.11 × 323,718.78
  4. Step 4: Simplify right side
    539,620.78x = 262,081,460,164.67
  5. Step 5: Solve for x
    x = 262,081,460,164.67/539,620.78
  6. Step 6: Final answer
    x = 485,677.11

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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.