Home / 512,520,670,448.45-768,242,850,376.80-172,441,782,121.98

Finding the Fourth Proportional to 512,520,670,448.45, 768,242,850,376.80 and 172,441,782,121.98

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Solution

The fourth proportional to 512,520,670,448.45, 768,242,850,376.80 and 172,441,782,121.98 is: 258,481,606,420.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    512,520,670,448.45 : 768,242,850,376.80 = 172,441,782,121.98 : x
  2. Step 2: Convert to fraction form
    512,520,670,448.45/768,242,850,376.80 = 172,441,782,121.98/x
  3. Step 3: Cross multiply
    512,520,670,448.45x = 768,242,850,376.80 × 172,441,782,121.98
  4. Step 4: Simplify right side
    512,520,670,448.45x = 132,477,166,221,445,048,565,760
  5. Step 5: Solve for x
    x = 132,477,166,221,445,048,565,760/512,520,670,448.45
  6. Step 6: Final answer
    x = 258,481,606,420.93

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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.