Home / 1,428,872.36-2,143,308.22-431,600.36

Finding the Fourth Proportional to 1,428,872.36, 2,143,308.22 and 431,600.36

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Solution

The fourth proportional to 1,428,872.36, 2,143,308.22 and 431,600.36 is: 647,400.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,428,872.36 : 2,143,308.22 = 431,600.36 : x
  2. Step 2: Convert to fraction form
    1,428,872.36/2,143,308.22 = 431,600.36/x
  3. Step 3: Cross multiply
    1,428,872.36x = 2,143,308.22 × 431,600.36
  4. Step 4: Simplify right side
    1,428,872.36x = 925,052,599,342.96
  5. Step 5: Solve for x
    x = 925,052,599,342.96/1,428,872.36
  6. Step 6: Final answer
    x = 647,400.44

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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.