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Finding the Fourth Proportional to 591,392.73, 816,121.31 and 319,460.56

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Solution

The fourth proportional to 591,392.73, 816,121.31 and 319,460.56 is: 440,855.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    591,392.73 : 816,121.31 = 319,460.56 : x
  2. Step 2: Convert to fraction form
    591,392.73/816,121.31 = 319,460.56/x
  3. Step 3: Cross multiply
    591,392.73x = 816,121.31 × 319,460.56
  4. Step 4: Simplify right side
    591,392.73x = 260,718,567,082.93
  5. Step 5: Solve for x
    x = 260,718,567,082.93/591,392.73
  6. Step 6: Final answer
    x = 440,855.21

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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.