Home / 1,247,993.38-1,870,841.89-678,542.32

Finding the Fourth Proportional to 1,247,993.38, 1,870,841.89 and 678,542.32

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Solution

The fourth proportional to 1,247,993.38, 1,870,841.89 and 678,542.32 is: 1,017,189.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,247,993.38 : 1,870,841.89 = 678,542.32 : x
  2. Step 2: Convert to fraction form
    1,247,993.38/1,870,841.89 = 678,542.32/x
  3. Step 3: Cross multiply
    1,247,993.38x = 1,870,841.89 × 678,542.32
  4. Step 4: Simplify right side
    1,247,993.38x = 1,269,445,396,393.78
  5. Step 5: Solve for x
    x = 1,269,445,396,393.78/1,247,993.38
  6. Step 6: Final answer
    x = 1,017,189.21

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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.