Home / 667,436.40-1,001,442.60-387,193.20

Finding the Fourth Proportional to 667,436.40, 1,001,442.60 and 387,193.20

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Solution

The fourth proportional to 667,436.40, 1,001,442.60 and 387,193.20 is: 580,956.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    667,436.40 : 1,001,442.60 = 387,193.20 : x
  2. Step 2: Convert to fraction form
    667,436.40/1,001,442.60 = 387,193.20/x
  3. Step 3: Cross multiply
    667,436.40x = 1,001,442.60 × 387,193.20
  4. Step 4: Simplify right side
    667,436.40x = 387,751,764,910.32
  5. Step 5: Solve for x
    x = 387,751,764,910.32/667,436.40
  6. Step 6: Final answer
    x = 580,956.87

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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.