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Finding the Fourth Proportional to 553,811.37, 764,260.38 and 299,162.56

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Solution

The fourth proportional to 553,811.37, 764,260.38 and 299,162.56 is: 412,844.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    553,811.37 : 764,260.38 = 299,162.56 : x
  2. Step 2: Convert to fraction form
    553,811.37/764,260.38 = 299,162.56/x
  3. Step 3: Cross multiply
    553,811.37x = 764,260.38 × 299,162.56
  4. Step 4: Simplify right side
    553,811.37x = 228,638,091,787.37
  5. Step 5: Solve for x
    x = 228,638,091,787.37/553,811.37
  6. Step 6: Final answer
    x = 412,844.71

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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.