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Finding the Fourth Proportional to 652,610.07, 978,875.62 and 388,054.15

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Solution

The fourth proportional to 652,610.07, 978,875.62 and 388,054.15 is: 582,057.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    652,610.07 : 978,875.62 = 388,054.15 : x
  2. Step 2: Convert to fraction form
    652,610.07/978,875.62 = 388,054.15/x
  3. Step 3: Cross multiply
    652,610.07x = 978,875.62 × 388,054.15
  4. Step 4: Simplify right side
    652,610.07x = 379,856,743,257.50
  5. Step 5: Solve for x
    x = 379,856,743,257.50/652,610.07
  6. Step 6: Final answer
    x = 582,057.74

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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.