Home / 388,266,112.80-582,399,169.20-345,939,789.60

Finding the Fourth Proportional to 388,266,112.80, 582,399,169.20 and 345,939,789.60

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Solution

The fourth proportional to 388,266,112.80, 582,399,169.20 and 345,939,789.60 is: 518,909,684.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,266,112.80 : 582,399,169.20 = 345,939,789.60 : x
  2. Step 2: Convert to fraction form
    388,266,112.80/582,399,169.20 = 345,939,789.60/x
  3. Step 3: Cross multiply
    388,266,112.80x = 582,399,169.20 × 345,939,789.60
  4. Step 4: Simplify right side
    388,266,112.80x = 201,475,046,056,262,816
  5. Step 5: Solve for x
    x = 201,475,046,056,262,816/388,266,112.80
  6. Step 6: Final answer
    x = 518,909,684.40

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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.