Finding the Fourth Proportional to 4,971,486,354.20, 7,457,229,531.30 and 1,290,991,708.70
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Solution
The fourth proportional to 4,971,486,354.20, 7,457,229,531.30 and 1,290,991,708.70 is: 1,936,487,563.05
Step by Step Solution
- Step 1: Write the proportion equation
4,971,486,354.20 : 7,457,229,531.30 = 1,290,991,708.70 : x - Step 2: Convert to fraction form
4,971,486,354.20/7,457,229,531.30 = 1,290,991,708.70/x - Step 3: Cross multiply
4,971,486,354.20x = 7,457,229,531.30 × 1,290,991,708.70 - Step 4: Simplify right side
4,971,486,354.20x = 9,627,221,494,781,087,744 - Step 5: Solve for x
x = 9,627,221,494,781,087,744/4,971,486,354.20 - Step 6: Final answer
x = 1,936,487,563.05
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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.