Home / 987,383.36-1,480,077.92-388,764.64

Finding the Fourth Proportional to 987,383.36, 1,480,077.92 and 388,764.64

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Solution

The fourth proportional to 987,383.36, 1,480,077.92 and 388,764.64 is: 582,754.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    987,383.36 : 1,480,077.92 = 388,764.64 : x
  2. Step 2: Convert to fraction form
    987,383.36/1,480,077.92 = 388,764.64/x
  3. Step 3: Cross multiply
    987,383.36x = 1,480,077.92 × 388,764.64
  4. Step 4: Simplify right side
    987,383.36x = 575,401,959,740.75
  5. Step 5: Solve for x
    x = 575,401,959,740.75/987,383.36
  6. Step 6: Final answer
    x = 582,754.36

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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.