Home / 2,155,371.30-2,974,394.16-1,188,542.34

Finding the Fourth Proportional to 2,155,371.30, 2,974,394.16 and 1,188,542.34

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Solution

The fourth proportional to 2,155,371.30, 2,974,394.16 and 1,188,542.34 is: 1,640,178.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,155,371.30 : 2,974,394.16 = 1,188,542.34 : x
  2. Step 2: Convert to fraction form
    2,155,371.30/2,974,394.16 = 1,188,542.34/x
  3. Step 3: Cross multiply
    2,155,371.30x = 2,974,394.16 × 1,188,542.34
  4. Step 4: Simplify right side
    2,155,371.30x = 3,535,193,395,008.74
  5. Step 5: Solve for x
    x = 3,535,193,395,008.74/2,155,371.30
  6. Step 6: Final answer
    x = 1,640,178.37

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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.