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Finding the Fourth Proportional to 493,338.60, 740,007.90 and 449,015.40

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Solution

The fourth proportional to 493,338.60, 740,007.90 and 449,015.40 is: 673,523.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    493,338.60 : 740,007.90 = 449,015.40 : x
  2. Step 2: Convert to fraction form
    493,338.60/740,007.90 = 449,015.40/x
  3. Step 3: Cross multiply
    493,338.60x = 740,007.90 × 449,015.40
  4. Step 4: Simplify right side
    493,338.60x = 332,274,943,221.66
  5. Step 5: Solve for x
    x = 332,274,943,221.66/493,338.60
  6. Step 6: Final answer
    x = 673,523.10

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.