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Finding the Fourth Proportional to 547,174.98, 821,051.37 and 388,277.73

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Solution

The fourth proportional to 547,174.98, 821,051.37 and 388,277.73 is: 582,621.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    547,174.98 : 821,051.37 = 388,277.73 : x
  2. Step 2: Convert to fraction form
    547,174.98/821,051.37 = 388,277.73/x
  3. Step 3: Cross multiply
    547,174.98x = 821,051.37 × 388,277.73
  4. Step 4: Simplify right side
    547,174.98x = 318,795,962,156.99
  5. Step 5: Solve for x
    x = 318,795,962,156.99/547,174.98
  6. Step 6: Final answer
    x = 582,621.60

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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.