Finding the Fourth Proportional to 5,419,008,051.20, 8,128,512,076.80 and 1,971,988,121.60
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Solution
The fourth proportional to 5,419,008,051.20, 8,128,512,076.80 and 1,971,988,121.60 is: 2,957,982,182.40
Step by Step Solution
- Step 1: Write the proportion equation
5,419,008,051.20 : 8,128,512,076.80 = 1,971,988,121.60 : x - Step 2: Convert to fraction form
5,419,008,051.20/8,128,512,076.80 = 1,971,988,121.60/x - Step 3: Cross multiply
5,419,008,051.20x = 8,128,512,076.80 × 1,971,988,121.60 - Step 4: Simplify right side
5,419,008,051.20x = 16,029,329,261,731,745,792 - Step 5: Solve for x
x = 16,029,329,261,731,745,792/5,419,008,051.20 - Step 6: Final answer
x = 2,957,982,182.40
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1.5x scale
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.