Home / 388,469,724.40-582,704,586.60-215,863,986.16

Finding the Fourth Proportional to 388,469,724.40, 582,704,586.60 and 215,863,986.16

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Solution

The fourth proportional to 388,469,724.40, 582,704,586.60 and 215,863,986.16 is: 323,795,979.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,469,724.40 : 582,704,586.60 = 215,863,986.16 : x
  2. Step 2: Convert to fraction form
    388,469,724.40/582,704,586.60 = 215,863,986.16/x
  3. Step 3: Cross multiply
    388,469,724.40x = 582,704,586.60 × 215,863,986.16
  4. Step 4: Simplify right side
    388,469,724.40x = 125,784,934,817,190,928
  5. Step 5: Solve for x
    x = 125,784,934,817,190,928/388,469,724.40
  6. Step 6: Final answer
    x = 323,795,979.24

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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.