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Finding the Fourth Proportional to 553,772.12, 764,206 and 299,123.52

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Solution

The fourth proportional to 553,772.12, 764,206 and 299,123.52 is: 412,790.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    553,772.12 : 764,206 = 299,123.52 : x
  2. Step 2: Convert to fraction form
    553,772.12/764,206 = 299,123.52/x
  3. Step 3: Cross multiply
    553,772.12x = 764,206 × 299,123.52
  4. Step 4: Simplify right side
    553,772.12x = 228,591,988,725.12
  5. Step 5: Solve for x
    x = 228,591,988,725.12/553,772.12
  6. Step 6: Final answer
    x = 412,790.71

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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.