Home / 1,378,356.86-2,067,535.83-431,801.12

Finding the Fourth Proportional to 1,378,356.86, 2,067,535.83 and 431,801.12

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Solution

The fourth proportional to 1,378,356.86, 2,067,535.83 and 431,801.12 is: 647,701.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,378,356.86 : 2,067,535.83 = 431,801.12 : x
  2. Step 2: Convert to fraction form
    1,378,356.86/2,067,535.83 = 431,801.12/x
  3. Step 3: Cross multiply
    1,378,356.86x = 2,067,535.83 × 431,801.12
  4. Step 4: Simplify right side
    1,378,356.86x = 892,764,287,034.13
  5. Step 5: Solve for x
    x = 892,764,287,034.13/1,378,356.86
  6. Step 6: Final answer
    x = 647,701.85

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Double scale
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Similar ratio
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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.