Home / 1,378,355.61-2,067,533.96-431,799.87

Finding the Fourth Proportional to 1,378,355.61, 2,067,533.96 and 431,799.87

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Solution

The fourth proportional to 1,378,355.61, 2,067,533.96 and 431,799.87 is: 647,699.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,378,355.61 : 2,067,533.96 = 431,799.87 : x
  2. Step 2: Convert to fraction form
    1,378,355.61/2,067,533.96 = 431,799.87/x
  3. Step 3: Cross multiply
    1,378,355.61x = 2,067,533.96 × 431,799.87
  4. Step 4: Simplify right side
    1,378,355.61x = 892,760,892,989.59
  5. Step 5: Solve for x
    x = 892,760,892,989.59/1,378,355.61
  6. Step 6: Final answer
    x = 647,699.97

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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.