Home / 619,390.50-928,458.42-419,731.18

Finding the Fourth Proportional to 619,390.50, 928,458.42 and 419,731.18

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Solution

The fourth proportional to 619,390.50, 928,458.42 and 419,731.18 is: 629,171.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    619,390.50 : 928,458.42 = 419,731.18 : x
  2. Step 2: Convert to fraction form
    619,390.50/928,458.42 = 419,731.18/x
  3. Step 3: Cross multiply
    619,390.50x = 928,458.42 × 419,731.18
  4. Step 4: Simplify right side
    619,390.50x = 389,702,948,207.54
  5. Step 5: Solve for x
    x = 389,702,948,207.54/619,390.50
  6. Step 6: Final answer
    x = 629,171.66

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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.