Home / 1,378,787.05-2,065,720.20-667,246.60

Finding the Fourth Proportional to 1,378,787.05, 2,065,720.20 and 667,246.60

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Solution

The fourth proportional to 1,378,787.05, 2,065,720.20 and 667,246.60 is: 999,679.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,378,787.05 : 2,065,720.20 = 667,246.60 : x
  2. Step 2: Convert to fraction form
    1,378,787.05/2,065,720.20 = 667,246.60/x
  3. Step 3: Cross multiply
    1,378,787.05x = 2,065,720.20 × 667,246.60
  4. Step 4: Simplify right side
    1,378,787.05x = 1,378,344,780,001.32
  5. Step 5: Solve for x
    x = 1,378,344,780,001.32/1,378,787.05
  6. Step 6: Final answer
    x = 999,679.23

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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.