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Finding the Fourth Proportional to 565,729.12, 780,640.69 and 323,997.27

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Solution

The fourth proportional to 565,729.12, 780,640.69 and 323,997.27 is: 447,078.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    565,729.12 : 780,640.69 = 323,997.27 : x
  2. Step 2: Convert to fraction form
    565,729.12/780,640.69 = 323,997.27/x
  3. Step 3: Cross multiply
    565,729.12x = 780,640.69 × 323,997.27
  4. Step 4: Simplify right side
    565,729.12x = 252,925,452,410.92
  5. Step 5: Solve for x
    x = 252,925,452,410.92/565,729.12
  6. Step 6: Final answer
    x = 447,078.72

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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.