Finding the Fourth Proportional to 1,036,253,716.97, 1,555,079,969.28 and 405,907,587.73
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Solution
The fourth proportional to 1,036,253,716.97, 1,555,079,969.28 and 405,907,587.73 is: 609,135,338.89
Step by Step Solution
- Step 1: Write the proportion equation
1,036,253,716.97 : 1,555,079,969.28 = 405,907,587.73 : x - Step 2: Convert to fraction form
1,036,253,716.97/1,555,079,969.28 = 405,907,587.73/x - Step 3: Cross multiply
1,036,253,716.97x = 1,555,079,969.28 × 405,907,587.73 - Step 4: Simplify right side
1,036,253,716.97x = 631,218,759,057,687,296 - Step 5: Solve for x
x = 631,218,759,057,687,296/1,036,253,716.97 - Step 6: Final answer
x = 609,135,338.89
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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.