Finding the Fourth Proportional to 1,261,515,517,245, 1,740,868,720,837.70 and 712,795,040,988.88
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Solution
The fourth proportional to 1,261,515,517,245, 1,740,868,720,837.70 and 712,795,040,988.88 is: 983,644,334,344.54
Step by Step Solution
- Step 1: Write the proportion equation
1,261,515,517,245 : 1,740,868,720,837.70 = 712,795,040,988.88 : x - Step 2: Convert to fraction form
1,261,515,517,245/1,740,868,720,837.70 = 712,795,040,988.88/x - Step 3: Cross multiply
1,261,515,517,245x = 1,740,868,720,837.70 × 712,795,040,988.88 - Step 4: Simplify right side
1,261,515,517,245x = 1,240,882,591,225,767,308,296,192 - Step 5: Solve for x
x = 1,240,882,591,225,767,308,296,192/1,261,515,517,245 - Step 6: Final answer
x = 983,644,334,344.54
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.