Home / 505,634,372.76-758,451,559.32-142,128,728.76

Finding the Fourth Proportional to 505,634,372.76, 758,451,559.32 and 142,128,728.76

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Solution

The fourth proportional to 505,634,372.76, 758,451,559.32 and 142,128,728.76 is: 213,193,093.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    505,634,372.76 : 758,451,559.32 = 142,128,728.76 : x
  2. Step 2: Convert to fraction form
    505,634,372.76/758,451,559.32 = 142,128,728.76/x
  3. Step 3: Cross multiply
    505,634,372.76x = 758,451,559.32 × 142,128,728.76
  4. Step 4: Simplify right side
    505,634,372.76x = 107,797,755,952,191,328
  5. Step 5: Solve for x
    x = 107,797,755,952,191,328/505,634,372.76
  6. Step 6: Final answer
    x = 213,193,093.19

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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.