Home / 1,121,429.14-1,682,062.30-438,187.56

Finding the Fourth Proportional to 1,121,429.14, 1,682,062.30 and 438,187.56

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Solution

The fourth proportional to 1,121,429.14, 1,682,062.30 and 438,187.56 is: 657,249.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,121,429.14 : 1,682,062.30 = 438,187.56 : x
  2. Step 2: Convert to fraction form
    1,121,429.14/1,682,062.30 = 438,187.56/x
  3. Step 3: Cross multiply
    1,121,429.14x = 1,682,062.30 × 438,187.56
  4. Step 4: Simplify right side
    1,121,429.14x = 737,058,775,004.99
  5. Step 5: Solve for x
    x = 737,058,775,004.99/1,121,429.14
  6. Step 6: Final answer
    x = 657,249.53

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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.