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Finding the Fourth Proportional to 388,486,133.60, 582,729,200.40 and 388,486,133.60

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Solution

The fourth proportional to 388,486,133.60, 582,729,200.40 and 388,486,133.60 is: 582,729,200.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,486,133.60 : 582,729,200.40 = 388,486,133.60 : x
  2. Step 2: Convert to fraction form
    388,486,133.60/582,729,200.40 = 388,486,133.60/x
  3. Step 3: Cross multiply
    388,486,133.60x = 582,729,200.40 × 388,486,133.60
  4. Step 4: Simplify right side
    388,486,133.60x = 226,382,213,999,215,584
  5. Step 5: Solve for x
    x = 226,382,213,999,215,584/388,486,133.60
  6. Step 6: Final answer
    x = 582,729,200.40

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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.