Home / 1,378,340.82-2,067,509.61-431,785.26

Finding the Fourth Proportional to 1,378,340.82, 2,067,509.61 and 431,785.26

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Solution

The fourth proportional to 1,378,340.82, 2,067,509.61 and 431,785.26 is: 647,677.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,378,340.82 : 2,067,509.61 = 431,785.26 : x
  2. Step 2: Convert to fraction form
    1,378,340.82/2,067,509.61 = 431,785.26/x
  3. Step 3: Cross multiply
    1,378,340.82x = 2,067,509.61 × 431,785.26
  4. Step 4: Simplify right side
    1,378,340.82x = 892,720,174,506.35
  5. Step 5: Solve for x
    x = 892,720,174,506.35/1,378,340.82
  6. Step 6: Final answer
    x = 647,677.38

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1.5x scale

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.