Finding the Fourth Proportional to 6,315,786,729.21, 8,715,440,390.80 and 3,457,375,979.57
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Solution
The fourth proportional to 6,315,786,729.21, 8,715,440,390.80 and 3,457,375,979.57 is: 4,770,989,830.79
Step by Step Solution
- Step 1: Write the proportion equation
6,315,786,729.21 : 8,715,440,390.80 = 3,457,375,979.57 : x - Step 2: Convert to fraction form
6,315,786,729.21/8,715,440,390.80 = 3,457,375,979.57/x - Step 3: Cross multiply
6,315,786,729.21x = 8,715,440,390.80 × 3,457,375,979.57 - Step 4: Simplify right side
6,315,786,729.21x = 30,132,554,258,520,412,160 - Step 5: Solve for x
x = 30,132,554,258,520,412,160/6,315,786,729.21 - Step 6: Final answer
x = 4,770,989,830.79
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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.