Home / 672,606,010.80-1,008,909,016.20-412,979,367.60

Finding the Fourth Proportional to 672,606,010.80, 1,008,909,016.20 and 412,979,367.60

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Solution

The fourth proportional to 672,606,010.80, 1,008,909,016.20 and 412,979,367.60 is: 619,469,051.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    672,606,010.80 : 1,008,909,016.20 = 412,979,367.60 : x
  2. Step 2: Convert to fraction form
    672,606,010.80/1,008,909,016.20 = 412,979,367.60/x
  3. Step 3: Cross multiply
    672,606,010.80x = 1,008,909,016.20 × 412,979,367.60
  4. Step 4: Simplify right side
    672,606,010.80x = 416,658,607,476,214,208
  5. Step 5: Solve for x
    x = 416,658,607,476,214,208/672,606,010.80
  6. Step 6: Final answer
    x = 619,469,051.40

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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.