Finding the Fourth Proportional to 7,186,236,112.80, 10,778,346,399.60 and 2,279,405,930.40
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Solution
The fourth proportional to 7,186,236,112.80, 10,778,346,399.60 and 2,279,405,930.40 is: 3,418,789,240.64
Step by Step Solution
- Step 1: Write the proportion equation
7,186,236,112.80 : 10,778,346,399.60 = 2,279,405,930.40 : x - Step 2: Convert to fraction form
7,186,236,112.80/10,778,346,399.60 = 2,279,405,930.40/x - Step 3: Cross multiply
7,186,236,112.80x = 10,778,346,399.60 × 2,279,405,930.40 - Step 4: Simplify right side
7,186,236,112.80x = 24,568,226,703,153,729,536 - Step 5: Solve for x
x = 24,568,226,703,153,729,536/7,186,236,112.80 - Step 6: Final answer
x = 3,418,789,240.64
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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.