Home / 512,520,670,944.60-768,242,851,119.90-172,441,782,618.45

Finding the Fourth Proportional to 512,520,670,944.60, 768,242,851,119.90 and 172,441,782,618.45

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Solution

The fourth proportional to 512,520,670,944.60, 768,242,851,119.90 and 172,441,782,618.45 is: 258,481,607,164.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    512,520,670,944.60 : 768,242,851,119.90 = 172,441,782,618.45 : x
  2. Step 2: Convert to fraction form
    512,520,670,944.60/768,242,851,119.90 = 172,441,782,618.45/x
  3. Step 3: Cross multiply
    512,520,670,944.60x = 768,242,851,119.90 × 172,441,782,618.45
  4. Step 4: Simplify right side
    512,520,670,944.60x = 132,477,166,730,996,059,471,872
  5. Step 5: Solve for x
    x = 132,477,166,730,996,059,471,872/512,520,670,944.60
  6. Step 6: Final answer
    x = 258,481,607,164.91

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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.