Finding the Fourth Proportional to 6,478,532,872.74, 8,940,383,986.41 and 3,508,314,246.18
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Solution
The fourth proportional to 6,478,532,872.74, 8,940,383,986.41 and 3,508,314,246.18 is: 4,841,478,328.81
Step by Step Solution
- Step 1: Write the proportion equation
6,478,532,872.74 : 8,940,383,986.41 = 3,508,314,246.18 : x - Step 2: Convert to fraction form
6,478,532,872.74/8,940,383,986.41 = 3,508,314,246.18/x - Step 3: Cross multiply
6,478,532,872.74x = 8,940,383,986.41 × 3,508,314,246.18 - Step 4: Simplify right side
6,478,532,872.74x = 31,365,676,505,841,741,824 - Step 5: Solve for x
x = 31,365,676,505,841,741,824/6,478,532,872.74 - Step 6: Final answer
x = 4,841,478,328.81
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1.5x scale
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.