Home / 1,319,912.35-1,821,504.83-861,320.32

Finding the Fourth Proportional to 1,319,912.35, 1,821,504.83 and 861,320.32

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Solution

The fourth proportional to 1,319,912.35, 1,821,504.83 and 861,320.32 is: 1,188,638.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,319,912.35 : 1,821,504.83 = 861,320.32 : x
  2. Step 2: Convert to fraction form
    1,319,912.35/1,821,504.83 = 861,320.32/x
  3. Step 3: Cross multiply
    1,319,912.35x = 1,821,504.83 × 861,320.32
  4. Step 4: Simplify right side
    1,319,912.35x = 1,568,899,114,196.78
  5. Step 5: Solve for x
    x = 1,568,899,114,196.78/1,319,912.35
  6. Step 6: Final answer
    x = 1,188,638.86

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.