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Finding the Fourth Proportional to 519,790.62, 717,317.04 and 304,934.34

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Solution

The fourth proportional to 519,790.62, 717,317.04 and 304,934.34 is: 420,812.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    519,790.62 : 717,317.04 = 304,934.34 : x
  2. Step 2: Convert to fraction form
    519,790.62/717,317.04 = 304,934.34/x
  3. Step 3: Cross multiply
    519,790.62x = 717,317.04 × 304,934.34
  4. Step 4: Simplify right side
    519,790.62x = 218,734,598,163.15
  5. Step 5: Solve for x
    x = 218,734,598,163.15/519,790.62
  6. Step 6: Final answer
    x = 420,812.90

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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.