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Finding the Fourth Proportional to 441,238.09, 660,518.81 and 399,135.91

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Solution

The fourth proportional to 441,238.09, 660,518.81 and 399,135.91 is: 597,493.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    441,238.09 : 660,518.81 = 399,135.91 : x
  2. Step 2: Convert to fraction form
    441,238.09/660,518.81 = 399,135.91/x
  3. Step 3: Cross multiply
    441,238.09x = 660,518.81 × 399,135.91
  4. Step 4: Simplify right side
    441,238.09x = 263,636,774,151.25
  5. Step 5: Solve for x
    x = 263,636,774,151.25/441,238.09
  6. Step 6: Final answer
    x = 597,493.24

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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.