Finding the Fourth Proportional to 2,157,135,527.20, 2,978,902,951.20 and 2,039,616,290.08
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Solution
The fourth proportional to 2,157,135,527.20, 2,978,902,951.20 and 2,039,616,290.08 is: 2,816,614,398.69
Step by Step Solution
- Step 1: Write the proportion equation
2,157,135,527.20 : 2,978,902,951.20 = 2,039,616,290.08 : x - Step 2: Convert to fraction form
2,157,135,527.20/2,978,902,951.20 = 2,039,616,290.08/x - Step 3: Cross multiply
2,157,135,527.20x = 2,978,902,951.20 × 2,039,616,290.08 - Step 4: Simplify right side
2,157,135,527.20x = 6,075,818,985,834,906,624 - Step 5: Solve for x
x = 6,075,818,985,834,906,624/2,157,135,527.20 - Step 6: Final answer
x = 2,816,614,398.69
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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.