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Finding the Fourth Proportional to 603,999.20, 905,221.20 and 463,059.20

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Solution

The fourth proportional to 603,999.20, 905,221.20 and 463,059.20 is: 693,992.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    603,999.20 : 905,221.20 = 463,059.20 : x
  2. Step 2: Convert to fraction form
    603,999.20/905,221.20 = 463,059.20/x
  3. Step 3: Cross multiply
    603,999.20x = 905,221.20 × 463,059.20
  4. Step 4: Simplify right side
    603,999.20x = 419,171,004,695.04
  5. Step 5: Solve for x
    x = 419,171,004,695.04/603,999.20
  6. Step 6: Final answer
    x = 693,992.65

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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.