Home / 388,467,487.60-582,701,231.40-266,023,481.20

Finding the Fourth Proportional to 388,467,487.60, 582,701,231.40 and 266,023,481.20

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Solution

The fourth proportional to 388,467,487.60, 582,701,231.40 and 266,023,481.20 is: 399,035,221.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,467,487.60 : 582,701,231.40 = 266,023,481.20 : x
  2. Step 2: Convert to fraction form
    388,467,487.60/582,701,231.40 = 266,023,481.20/x
  3. Step 3: Cross multiply
    388,467,487.60x = 582,701,231.40 × 266,023,481.20
  4. Step 4: Simplify right side
    388,467,487.60x = 155,012,210,076,554,752
  5. Step 5: Solve for x
    x = 155,012,210,076,554,752/388,467,487.60
  6. Step 6: Final answer
    x = 399,035,221.80

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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.