Finding the Fourth Proportional to 3,902,025,772.26, 5,384,781,987.87 and 2,117,879,220.60
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Solution
The fourth proportional to 3,902,025,772.26, 5,384,781,987.87 and 2,117,879,220.60 is: 2,922,665,954.86
Step by Step Solution
- Step 1: Write the proportion equation
3,902,025,772.26 : 5,384,781,987.87 = 2,117,879,220.60 : x - Step 2: Convert to fraction form
3,902,025,772.26/5,384,781,987.87 = 2,117,879,220.60/x - Step 3: Cross multiply
3,902,025,772.26x = 5,384,781,987.87 × 2,117,879,220.60 - Step 4: Simplify right side
3,902,025,772.26x = 11,404,317,879,571,034,112 - Step 5: Solve for x
x = 11,404,317,879,571,034,112/3,902,025,772.26 - Step 6: Final answer
x = 2,922,665,954.86
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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.