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Finding the Fourth Proportional to 591,370.80, 816,092.01 and 319,438.68

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Solution

The fourth proportional to 591,370.80, 816,092.01 and 319,438.68 is: 440,825.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    591,370.80 : 816,092.01 = 319,438.68 : x
  2. Step 2: Convert to fraction form
    591,370.80/816,092.01 = 319,438.68/x
  3. Step 3: Cross multiply
    591,370.80x = 816,092.01 × 319,438.68
  4. Step 4: Simplify right side
    591,370.80x = 260,691,354,432.95
  5. Step 5: Solve for x
    x = 260,691,354,432.95/591,370.80
  6. Step 6: Final answer
    x = 440,825.54

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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.