Home / 766,157,987,312.75-1,149,238,087,039.40-312,876,891,388.33

Finding the Fourth Proportional to 766,157,987,312.75, 1,149,238,087,039.40 and 312,876,891,388.33

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Solution

The fourth proportional to 766,157,987,312.75, 1,149,238,087,039.40 and 312,876,891,388.33 is: 469,315,788,769.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    766,157,987,312.75 : 1,149,238,087,039.40 = 312,876,891,388.33 : x
  2. Step 2: Convert to fraction form
    766,157,987,312.75/1,149,238,087,039.40 = 312,876,891,388.33/x
  3. Step 3: Cross multiply
    766,157,987,312.75x = 1,149,238,087,039.40 × 312,876,891,388.33
  4. Step 4: Simplify right side
    766,157,987,312.75x = 359,570,040,137,958,475,956,224
  5. Step 5: Solve for x
    x = 359,570,040,137,958,475,956,224/766,157,987,312.75
  6. Step 6: Final answer
    x = 469,315,788,769.79

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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.