Home / 1,386,344.70-2,079,517.05-389,072.70

Finding the Fourth Proportional to 1,386,344.70, 2,079,517.05 and 389,072.70

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Solution

The fourth proportional to 1,386,344.70, 2,079,517.05 and 389,072.70 is: 583,609.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,386,344.70 : 2,079,517.05 = 389,072.70 : x
  2. Step 2: Convert to fraction form
    1,386,344.70/2,079,517.05 = 389,072.70/x
  3. Step 3: Cross multiply
    1,386,344.70x = 2,079,517.05 × 389,072.70
  4. Step 4: Simplify right side
    1,386,344.70x = 809,083,313,339.54
  5. Step 5: Solve for x
    x = 809,083,313,339.54/1,386,344.70
  6. Step 6: Final answer
    x = 583,609.05

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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.