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Finding the Fourth Proportional to 572,198.36, 789,451.26 and 330,449

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Solution

The fourth proportional to 572,198.36, 789,451.26 and 330,449 is: 455,914.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    572,198.36 : 789,451.26 = 330,449 : x
  2. Step 2: Convert to fraction form
    572,198.36/789,451.26 = 330,449/x
  3. Step 3: Cross multiply
    572,198.36x = 789,451.26 × 330,449
  4. Step 4: Simplify right side
    572,198.36x = 260,873,379,415.74
  5. Step 5: Solve for x
    x = 260,873,379,415.74/572,198.36
  6. Step 6: Final answer
    x = 455,914.24

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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.