Finding the Fourth Proportional to 1,771,474,942.20, 2,657,212,413.30 and 1,279,147,999.80
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Solution
The fourth proportional to 1,771,474,942.20, 2,657,212,413.30 and 1,279,147,999.80 is: 1,918,721,999.70
Step by Step Solution
- Step 1: Write the proportion equation
1,771,474,942.20 : 2,657,212,413.30 = 1,279,147,999.80 : x - Step 2: Convert to fraction form
1,771,474,942.20/2,657,212,413.30 = 1,279,147,999.80/x - Step 3: Cross multiply
1,771,474,942.20x = 2,657,212,413.30 × 1,279,147,999.80 - Step 4: Simplify right side
1,771,474,942.20x = 3,398,967,943,516,426,240 - Step 5: Solve for x
x = 3,398,967,943,516,426,240/1,771,474,942.20 - Step 6: Final answer
x = 1,918,721,999.70
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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.