Home / 1,378,576.40-2,065,531.80-667,072.40

Finding the Fourth Proportional to 1,378,576.40, 2,065,531.80 and 667,072.40

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Solution

The fourth proportional to 1,378,576.40, 2,065,531.80 and 667,072.40 is: 999,479.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,378,576.40 : 2,065,531.80 = 667,072.40 : x
  2. Step 2: Convert to fraction form
    1,378,576.40/2,065,531.80 = 667,072.40/x
  3. Step 3: Cross multiply
    1,378,576.40x = 2,065,531.80 × 667,072.40
  4. Step 4: Simplify right side
    1,378,576.40x = 1,377,859,255,102.32
  5. Step 5: Solve for x
    x = 1,377,859,255,102.32/1,378,576.40
  6. Step 6: Final answer
    x = 999,479.79

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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.