Home / 619,388.51-928,455.41-419,729.18

Finding the Fourth Proportional to 619,388.51, 928,455.41 and 419,729.18

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Solution

The fourth proportional to 619,388.51, 928,455.41 and 419,729.18 is: 629,168.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    619,388.51 : 928,455.41 = 419,729.18 : x
  2. Step 2: Convert to fraction form
    619,388.51/928,455.41 = 419,729.18/x
  3. Step 3: Cross multiply
    619,388.51x = 928,455.41 × 419,729.18
  4. Step 4: Simplify right side
    619,388.51x = 389,699,824,312.91
  5. Step 5: Solve for x
    x = 389,699,824,312.91/619,388.51
  6. Step 6: Final answer
    x = 629,168.64

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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.