Home / 766,157,987,105.40-1,149,238,086,728.60-312,876,891,181.43

Finding the Fourth Proportional to 766,157,987,105.40, 1,149,238,086,728.60 and 312,876,891,181.43

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Solution

The fourth proportional to 766,157,987,105.40, 1,149,238,086,728.60 and 312,876,891,181.43 is: 469,315,788,459.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    766,157,987,105.40 : 1,149,238,086,728.60 = 312,876,891,181.43 : x
  2. Step 2: Convert to fraction form
    766,157,987,105.40/1,149,238,086,728.60 = 312,876,891,181.43/x
  3. Step 3: Cross multiply
    766,157,987,105.40x = 1,149,238,086,728.60 × 312,876,891,181.43
  4. Step 4: Simplify right side
    766,157,987,105.40x = 359,570,039,802,939,014,381,568
  5. Step 5: Solve for x
    x = 359,570,039,802,939,014,381,568/766,157,987,105.40
  6. Step 6: Final answer
    x = 469,315,788,459.53

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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.