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Finding the Fourth Proportional to 553,840.85, 764,490.12 and 324,471.89

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Solution

The fourth proportional to 553,840.85, 764,490.12 and 324,471.89 is: 447,882.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    553,840.85 : 764,490.12 = 324,471.89 : x
  2. Step 2: Convert to fraction form
    553,840.85/764,490.12 = 324,471.89/x
  3. Step 3: Cross multiply
    553,840.85x = 764,490.12 × 324,471.89
  4. Step 4: Simplify right side
    553,840.85x = 248,055,554,122.73
  5. Step 5: Solve for x
    x = 248,055,554,122.73/553,840.85
  6. Step 6: Final answer
    x = 447,882.37

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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.