Finding the Fourth Proportional to 7,726,297,811.20, 11,589,446,716.80 and 6,486,552,246.40
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Solution
The fourth proportional to 7,726,297,811.20, 11,589,446,716.80 and 6,486,552,246.40 is: 9,729,828,369.60
Step by Step Solution
- Step 1: Write the proportion equation
7,726,297,811.20 : 11,589,446,716.80 = 6,486,552,246.40 : x - Step 2: Convert to fraction form
7,726,297,811.20/11,589,446,716.80 = 6,486,552,246.40/x - Step 3: Cross multiply
7,726,297,811.20x = 11,589,446,716.80 × 6,486,552,246.40 - Step 4: Simplify right side
7,726,297,811.20x = 75,175,551,635,392,135,168 - Step 5: Solve for x
x = 75,175,551,635,392,135,168/7,726,297,811.20 - Step 6: Final answer
x = 9,729,828,369.60
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Double scale
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Similar ratio
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1.5x scale
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.