Finding the Fourth Proportional to 4,971,486,352.70, 7,457,229,529.05 and 1,290,991,707.20
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Solution
The fourth proportional to 4,971,486,352.70, 7,457,229,529.05 and 1,290,991,707.20 is: 1,936,487,560.80
Step by Step Solution
- Step 1: Write the proportion equation
4,971,486,352.70 : 7,457,229,529.05 = 1,290,991,707.20 : x - Step 2: Convert to fraction form
4,971,486,352.70/7,457,229,529.05 = 1,290,991,707.20/x - Step 3: Cross multiply
4,971,486,352.70x = 7,457,229,529.05 × 1,290,991,707.20 - Step 4: Simplify right side
4,971,486,352.70x = 9,627,221,480,690,511,872 - Step 5: Solve for x
x = 9,627,221,480,690,511,872/4,971,486,352.70 - Step 6: Final answer
x = 1,936,487,560.80
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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.