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Finding the Fourth Proportional to 591,367.60, 816,087.60 and 319,435.49

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Solution

The fourth proportional to 591,367.60, 816,087.60 and 319,435.49 is: 440,821.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    591,367.60 : 816,087.60 = 319,435.49 : x
  2. Step 2: Convert to fraction form
    591,367.60/816,087.60 = 319,435.49/x
  3. Step 3: Cross multiply
    591,367.60x = 816,087.60 × 319,435.49
  4. Step 4: Simplify right side
    591,367.60x = 260,687,337,110.60
  5. Step 5: Solve for x
    x = 260,687,337,110.60/591,367.60
  6. Step 6: Final answer
    x = 440,821.14

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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.