Finding the Fourth Proportional to 7,612,324,918.88, 11,419,037,715 and 3,186,292,952.12
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Solution
The fourth proportional to 7,612,324,918.88, 11,419,037,715 and 3,186,292,952.12 is: 4,779,669,782.76
Step by Step Solution
- Step 1: Write the proportion equation
7,612,324,918.88 : 11,419,037,715 = 3,186,292,952.12 : x - Step 2: Convert to fraction form
7,612,324,918.88/11,419,037,715 = 3,186,292,952.12/x - Step 3: Cross multiply
7,612,324,918.88x = 11,419,037,715 × 3,186,292,952.12 - Step 4: Simplify right side
7,612,324,918.88x = 36,384,399,391,296,966,656 - Step 5: Solve for x
x = 36,384,399,391,296,966,656/7,612,324,918.88 - Step 6: Final answer
x = 4,779,669,782.76
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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.