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Finding the Fourth Proportional to 652,611.44, 978,877.66 and 388,055.52

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Solution

The fourth proportional to 652,611.44, 978,877.66 and 388,055.52 is: 582,059.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    652,611.44 : 978,877.66 = 388,055.52 : x
  2. Step 2: Convert to fraction form
    652,611.44/978,877.66 = 388,055.52/x
  3. Step 3: Cross multiply
    652,611.44x = 978,877.66 × 388,055.52
  4. Step 4: Simplify right side
    652,611.44x = 379,858,879,367.68
  5. Step 5: Solve for x
    x = 379,858,879,367.68/652,611.44
  6. Step 6: Final answer
    x = 582,059.79

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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.