Home / 421,015,054.44-631,515,419.10-125,910,849

Finding the Fourth Proportional to 421,015,054.44, 631,515,419.10 and 125,910,849

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Solution

The fourth proportional to 421,015,054.44, 631,515,419.10 and 125,910,849 is: 188,864,131.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    421,015,054.44 : 631,515,419.10 = 125,910,849 : x
  2. Step 2: Convert to fraction form
    421,015,054.44/631,515,419.10 = 125,910,849/x
  3. Step 3: Cross multiply
    421,015,054.44x = 631,515,419.10 × 125,910,849
  4. Step 4: Simplify right side
    421,015,054.44x = 79,514,642,575,471,824
  5. Step 5: Solve for x
    x = 79,514,642,575,471,824/421,015,054.44
  6. Step 6: Final answer
    x = 188,864,131.43

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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.