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Finding the Fourth Proportional to 553,912.34, 764,399.57 and 299,263.73

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Solution

The fourth proportional to 553,912.34, 764,399.57 and 299,263.73 is: 412,984.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    553,912.34 : 764,399.57 = 299,263.73 : x
  2. Step 2: Convert to fraction form
    553,912.34/764,399.57 = 299,263.73/x
  3. Step 3: Cross multiply
    553,912.34x = 764,399.57 × 299,263.73
  4. Step 4: Simplify right side
    553,912.34x = 228,757,066,528.60
  5. Step 5: Solve for x
    x = 228,757,066,528.60/553,912.34
  6. Step 6: Final answer
    x = 412,984.24

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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.