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Finding the Fourth Proportional to 531,628.28, 796,539.72 and 320,823.28

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Solution

The fourth proportional to 531,628.28, 796,539.72 and 320,823.28 is: 480,690.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    531,628.28 : 796,539.72 = 320,823.28 : x
  2. Step 2: Convert to fraction form
    531,628.28/796,539.72 = 320,823.28/x
  3. Step 3: Cross multiply
    531,628.28x = 796,539.72 × 320,823.28
  4. Step 4: Simplify right side
    531,628.28x = 255,548,485,620.68
  5. Step 5: Solve for x
    x = 255,548,485,620.68/531,628.28
  6. Step 6: Final answer
    x = 480,690.16

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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.