Home / 1,434,321.90-1,979,370.12-861,371.64

Finding the Fourth Proportional to 1,434,321.90, 1,979,370.12 and 861,371.64

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Solution

The fourth proportional to 1,434,321.90, 1,979,370.12 and 861,371.64 is: 1,188,696.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,434,321.90 : 1,979,370.12 = 861,371.64 : x
  2. Step 2: Convert to fraction form
    1,434,321.90/1,979,370.12 = 861,371.64/x
  3. Step 3: Cross multiply
    1,434,321.90x = 1,979,370.12 × 861,371.64
  4. Step 4: Simplify right side
    1,434,321.90x = 1,704,973,286,431.40
  5. Step 5: Solve for x
    x = 1,704,973,286,431.40/1,434,321.90
  6. Step 6: Final answer
    x = 1,188,696.41

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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.