Home / 804,978,128.80-1,207,467,193.20-259,719,662.80

Finding the Fourth Proportional to 804,978,128.80, 1,207,467,193.20 and 259,719,662.80

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Solution

The fourth proportional to 804,978,128.80, 1,207,467,193.20 and 259,719,662.80 is: 389,579,494.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    804,978,128.80 : 1,207,467,193.20 = 259,719,662.80 : x
  2. Step 2: Convert to fraction form
    804,978,128.80/1,207,467,193.20 = 259,719,662.80/x
  3. Step 3: Cross multiply
    804,978,128.80x = 1,207,467,193.20 × 259,719,662.80
  4. Step 4: Simplify right side
    804,978,128.80x = 313,602,972,259,966,464
  5. Step 5: Solve for x
    x = 313,602,972,259,966,464/804,978,128.80
  6. Step 6: Final answer
    x = 389,579,494.20

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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.