Home / 787,908.36-1,182,231.62-388,331.32

Finding the Fourth Proportional to 787,908.36, 1,182,231.62 and 388,331.32

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Solution

The fourth proportional to 787,908.36, 1,182,231.62 and 388,331.32 is: 582,678.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    787,908.36 : 1,182,231.62 = 388,331.32 : x
  2. Step 2: Convert to fraction form
    787,908.36/1,182,231.62 = 388,331.32/x
  3. Step 3: Cross multiply
    787,908.36x = 1,182,231.62 × 388,331.32
  4. Step 4: Simplify right side
    787,908.36x = 459,097,565,540.34
  5. Step 5: Solve for x
    x = 459,097,565,540.34/787,908.36
  6. Step 6: Final answer
    x = 582,678.89

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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.