Home / 860,508,418.37-1,290,988,195.42-270,274,816.78

Finding the Fourth Proportional to 860,508,418.37, 1,290,988,195.42 and 270,274,816.78

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Solution

The fourth proportional to 860,508,418.37, 1,290,988,195.42 and 270,274,816.78 is: 405,483,073.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    860,508,418.37 : 1,290,988,195.42 = 270,274,816.78 : x
  2. Step 2: Convert to fraction form
    860,508,418.37/1,290,988,195.42 = 270,274,816.78/x
  3. Step 3: Cross multiply
    860,508,418.37x = 1,290,988,195.42 × 270,274,816.78
  4. Step 4: Simplify right side
    860,508,418.37x = 348,921,597,986,148,992
  5. Step 5: Solve for x
    x = 348,921,597,986,148,992/860,508,418.37
  6. Step 6: Final answer
    x = 405,483,073.19

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Double scale
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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.