Home / 1,206,006.30-1,809,009.45-639,135.90

Finding the Fourth Proportional to 1,206,006.30, 1,809,009.45 and 639,135.90

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Solution

The fourth proportional to 1,206,006.30, 1,809,009.45 and 639,135.90 is: 958,703.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,206,006.30 : 1,809,009.45 = 639,135.90 : x
  2. Step 2: Convert to fraction form
    1,206,006.30/1,809,009.45 = 639,135.90/x
  3. Step 3: Cross multiply
    1,206,006.30x = 1,809,009.45 × 639,135.90
  4. Step 4: Simplify right side
    1,206,006.30x = 1,156,202,882,934.26
  5. Step 5: Solve for x
    x = 1,156,202,882,934.26/1,206,006.30
  6. Step 6: Final answer
    x = 958,703.85

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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.