Finding the Fourth Proportional to 3,909,174,448.80, 5,394,622,413.74 and 2,124,921,742.82
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Solution
The fourth proportional to 3,909,174,448.80, 5,394,622,413.74 and 2,124,921,742.82 is: 2,932,371,172.33
Step by Step Solution
- Step 1: Write the proportion equation
3,909,174,448.80 : 5,394,622,413.74 = 2,124,921,742.82 : x - Step 2: Convert to fraction form
3,909,174,448.80/5,394,622,413.74 = 2,124,921,742.82/x - Step 3: Cross multiply
3,909,174,448.80x = 5,394,622,413.74 × 2,124,921,742.82 - Step 4: Simplify right side
3,909,174,448.80x = 11,463,150,461,260,234,752 - Step 5: Solve for x
x = 11,463,150,461,260,234,752/3,909,174,448.80 - Step 6: Final answer
x = 2,932,371,172.33
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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.