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Finding the Fourth Proportional to 723,679.31, 998,023.78 and 451,772.34

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Solution

The fourth proportional to 723,679.31, 998,023.78 and 451,772.34 is: 623,037.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    723,679.31 : 998,023.78 = 451,772.34 : x
  2. Step 2: Convert to fraction form
    723,679.31/998,023.78 = 451,772.34/x
  3. Step 3: Cross multiply
    723,679.31x = 998,023.78 × 451,772.34
  4. Step 4: Simplify right side
    723,679.31x = 450,879,535,288.37
  5. Step 5: Solve for x
    x = 450,879,535,288.37/723,679.31
  6. Step 6: Final answer
    x = 623,037.76

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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.