Home / 1,175,431,902.96-1,763,147,592-428,503,672.32

Finding the Fourth Proportional to 1,175,431,902.96, 1,763,147,592 and 428,503,672.32

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Solution

The fourth proportional to 1,175,431,902.96, 1,763,147,592 and 428,503,672.32 is: 642,755,412.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,175,431,902.96 : 1,763,147,592 = 428,503,672.32 : x
  2. Step 2: Convert to fraction form
    1,175,431,902.96/1,763,147,592 = 428,503,672.32/x
  3. Step 3: Cross multiply
    1,175,431,902.96x = 1,763,147,592 × 428,503,672.32
  4. Step 4: Simplify right side
    1,175,431,902.96x = 755,515,218,014,164,992
  5. Step 5: Solve for x
    x = 755,515,218,014,164,992/1,175,431,902.96
  6. Step 6: Final answer
    x = 642,755,412.81

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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.