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Finding the Fourth Proportional to 439,521.96, 606,468.42 and 288,805.80

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Solution

The fourth proportional to 439,521.96, 606,468.42 and 288,805.80 is: 398,504.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    439,521.96 : 606,468.42 = 288,805.80 : x
  2. Step 2: Convert to fraction form
    439,521.96/606,468.42 = 288,805.80/x
  3. Step 3: Cross multiply
    439,521.96x = 606,468.42 × 288,805.80
  4. Step 4: Simplify right side
    439,521.96x = 175,151,597,212.84
  5. Step 5: Solve for x
    x = 175,151,597,212.84/439,521.96
  6. Step 6: Final answer
    x = 398,504.77

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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.