Home / 1,378,205.84-2,067,308.78-431,650.64

Finding the Fourth Proportional to 1,378,205.84, 2,067,308.78 and 431,650.64

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Solution

The fourth proportional to 1,378,205.84, 2,067,308.78 and 431,650.64 is: 647,475.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,378,205.84 : 2,067,308.78 = 431,650.64 : x
  2. Step 2: Convert to fraction form
    1,378,205.84/2,067,308.78 = 431,650.64/x
  3. Step 3: Cross multiply
    1,378,205.84x = 2,067,308.78 × 431,650.64
  4. Step 4: Simplify right side
    1,378,205.84x = 892,355,157,964.62
  5. Step 5: Solve for x
    x = 892,355,157,964.62/1,378,205.84
  6. Step 6: Final answer
    x = 647,475.97

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Double scale
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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.