Home / 1,121,383.92-1,681,872.86-322,469.40

Finding the Fourth Proportional to 1,121,383.92, 1,681,872.86 and 322,469.40

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Solution

The fourth proportional to 1,121,383.92, 1,681,872.86 and 322,469.40 is: 483,645.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,121,383.92 : 1,681,872.86 = 322,469.40 : x
  2. Step 2: Convert to fraction form
    1,121,383.92/1,681,872.86 = 322,469.40/x
  3. Step 3: Cross multiply
    1,121,383.92x = 1,681,872.86 × 322,469.40
  4. Step 4: Simplify right side
    1,121,383.92x = 542,352,532,040.48
  5. Step 5: Solve for x
    x = 542,352,532,040.48/1,121,383.92
  6. Step 6: Final answer
    x = 483,645.72

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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.