Finding the Fourth Proportional to 7,279,081,311.40, 10,918,621,967.10 and 6,993,378,629.80
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Solution
The fourth proportional to 7,279,081,311.40, 10,918,621,967.10 and 6,993,378,629.80 is: 10,490,067,944.70
Step by Step Solution
- Step 1: Write the proportion equation
7,279,081,311.40 : 10,918,621,967.10 = 6,993,378,629.80 : x - Step 2: Convert to fraction form
7,279,081,311.40/10,918,621,967.10 = 6,993,378,629.80/x - Step 3: Cross multiply
7,279,081,311.40x = 10,918,621,967.10 × 6,993,378,629.80 - Step 4: Simplify right side
7,279,081,311.40x = 76,358,057,531,581,988,864 - Step 5: Solve for x
x = 76,358,057,531,581,988,864/7,279,081,311.40 - Step 6: Final answer
x = 10,490,067,944.70
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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.