Home / 512,520,670,447.80-768,242,850,375.90-172,441,782,121.32

Finding the Fourth Proportional to 512,520,670,447.80, 768,242,850,375.90 and 172,441,782,121.32

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Solution

The fourth proportional to 512,520,670,447.80, 768,242,850,375.90 and 172,441,782,121.32 is: 258,481,606,419.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    512,520,670,447.80 : 768,242,850,375.90 = 172,441,782,121.32 : x
  2. Step 2: Convert to fraction form
    512,520,670,447.80/768,242,850,375.90 = 172,441,782,121.32/x
  3. Step 3: Cross multiply
    512,520,670,447.80x = 768,242,850,375.90 × 172,441,782,121.32
  4. Step 4: Simplify right side
    512,520,670,447.80x = 132,477,166,220,782,801,518,592
  5. Step 5: Solve for x
    x = 132,477,166,220,782,801,518,592/512,520,670,447.80
  6. Step 6: Final answer
    x = 258,481,606,419.96

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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.