Home / 387,100,999.40-580,651,499.10-193,609,236.20

Finding the Fourth Proportional to 387,100,999.40, 580,651,499.10 and 193,609,236.20

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Solution

The fourth proportional to 387,100,999.40, 580,651,499.10 and 193,609,236.20 is: 290,413,854.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,100,999.40 : 580,651,499.10 = 193,609,236.20 : x
  2. Step 2: Convert to fraction form
    387,100,999.40/580,651,499.10 = 193,609,236.20/x
  3. Step 3: Cross multiply
    387,100,999.40x = 580,651,499.10 × 193,609,236.20
  4. Step 4: Simplify right side
    387,100,999.40x = 112,419,493,239,135,984
  5. Step 5: Solve for x
    x = 112,419,493,239,135,984/387,100,999.40
  6. Step 6: Final answer
    x = 290,413,854.30

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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.