Finding the Fourth Proportional to 8,278,858,881.80, 12,418,288,322.70 and 6,646,272,129.80
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Solution
The fourth proportional to 8,278,858,881.80, 12,418,288,322.70 and 6,646,272,129.80 is: 9,969,408,194.70
Step by Step Solution
- Step 1: Write the proportion equation
8,278,858,881.80 : 12,418,288,322.70 = 6,646,272,129.80 : x - Step 2: Convert to fraction form
8,278,858,881.80/12,418,288,322.70 = 6,646,272,129.80/x - Step 3: Cross multiply
8,278,858,881.80x = 12,418,288,322.70 × 6,646,272,129.80 - Step 4: Simplify right side
8,278,858,881.80x = 82,535,323,578,981,810,176 - Step 5: Solve for x
x = 82,535,323,578,981,810,176/8,278,858,881.80 - Step 6: Final answer
x = 9,969,408,194.70
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Double scale
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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.