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Finding the Fourth Proportional to 484,557.76, 726,839.37 and 431,495.67

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Solution

The fourth proportional to 484,557.76, 726,839.37 and 431,495.67 is: 647,245.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    484,557.76 : 726,839.37 = 431,495.67 : x
  2. Step 2: Convert to fraction form
    484,557.76/726,839.37 = 431,495.67/x
  3. Step 3: Cross multiply
    484,557.76x = 726,839.37 × 431,495.67
  4. Step 4: Simplify right side
    484,557.76x = 313,628,040,940.53
  5. Step 5: Solve for x
    x = 313,628,040,940.53/484,557.76
  6. Step 6: Final answer
    x = 647,245.94

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.