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Finding the Fourth Proportional to 388,383,691.80, 582,575,537.70 and 349,416,600.60

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Solution

The fourth proportional to 388,383,691.80, 582,575,537.70 and 349,416,600.60 is: 524,124,900.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,383,691.80 : 582,575,537.70 = 349,416,600.60 : x
  2. Step 2: Convert to fraction form
    388,383,691.80/582,575,537.70 = 349,416,600.60/x
  3. Step 3: Cross multiply
    388,383,691.80x = 582,575,537.70 × 349,416,600.60
  4. Step 4: Simplify right side
    388,383,691.80x = 203,561,563,975,851,168
  5. Step 5: Solve for x
    x = 203,561,563,975,851,168/388,383,691.80
  6. Step 6: Final answer
    x = 524,124,900.90

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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.