Finding the Fourth Proportional to 12,181,865,885.68, 16,816,483,284.58 and 7,672,372,290.84
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Solution
The fourth proportional to 12,181,865,885.68, 16,816,483,284.58 and 7,672,372,290.84 is: 10,591,343,033.39
Step by Step Solution
- Step 1: Write the proportion equation
12,181,865,885.68 : 16,816,483,284.58 = 7,672,372,290.84 : x - Step 2: Convert to fraction form
12,181,865,885.68/16,816,483,284.58 = 7,672,372,290.84/x - Step 3: Cross multiply
12,181,865,885.68x = 16,816,483,284.58 × 7,672,372,290.84 - Step 4: Simplify right side
12,181,865,885.68x = 129,022,320,381,985,619,968 - Step 5: Solve for x
x = 129,022,320,381,985,619,968/12,181,865,885.68 - Step 6: Final answer
x = 10,591,343,033.39
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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.