Home / 3,120,218-4,305,900.84-1,689,434

Finding the Fourth Proportional to 3,120,218, 4,305,900.84 and 1,689,434

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Solution

The fourth proportional to 3,120,218, 4,305,900.84 and 1,689,434 is: 2,331,418.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,120,218 : 4,305,900.84 = 1,689,434 : x
  2. Step 2: Convert to fraction form
    3,120,218/4,305,900.84 = 1,689,434/x
  3. Step 3: Cross multiply
    3,120,218x = 4,305,900.84 × 1,689,434
  4. Step 4: Simplify right side
    3,120,218x = 7,274,535,279,724.56
  5. Step 5: Solve for x
    x = 7,274,535,279,724.56/3,120,218
  6. Step 6: Final answer
    x = 2,331,418.92

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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.