Finding the Fourth Proportional to 3,847,948,086.69, 5,310,387,173.70 and 2,154,387,915.09
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Solution
The fourth proportional to 3,847,948,086.69, 5,310,387,173.70 and 2,154,387,915.09 is: 2,973,177,832.37
Step by Step Solution
- Step 1: Write the proportion equation
3,847,948,086.69 : 5,310,387,173.70 = 2,154,387,915.09 : x - Step 2: Convert to fraction form
3,847,948,086.69/5,310,387,173.70 = 2,154,387,915.09/x - Step 3: Cross multiply
3,847,948,086.69x = 5,310,387,173.70 × 2,154,387,915.09 - Step 4: Simplify right side
3,847,948,086.69x = 11,440,633,951,468,220,416 - Step 5: Solve for x
x = 11,440,633,951,468,220,416/3,847,948,086.69 - Step 6: Final answer
x = 2,973,177,832.37
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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.