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Finding the Fourth Proportional to 591,298.62, 815,991.84 and 319,366.41

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Solution

The fourth proportional to 591,298.62, 815,991.84 and 319,366.41 is: 440,725.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    591,298.62 : 815,991.84 = 319,366.41 : x
  2. Step 2: Convert to fraction form
    591,298.62/815,991.84 = 319,366.41/x
  3. Step 3: Cross multiply
    591,298.62x = 815,991.84 × 319,366.41
  4. Step 4: Simplify right side
    591,298.62x = 260,600,384,530.09
  5. Step 5: Solve for x
    x = 260,600,384,530.09/591,298.62
  6. Step 6: Final answer
    x = 440,725.51

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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.