Finding the Fourth Proportional to 312,663,010.80, 468,994,516.20 and 266,305,609.20
Calculator
Solution
The fourth proportional to 312,663,010.80, 468,994,516.20 and 266,305,609.20 is: 399,458,413.80
Step by Step Solution
- Step 1: Write the proportion equation
312,663,010.80 : 468,994,516.20 = 266,305,609.20 : x - Step 2: Convert to fraction form
312,663,010.80/468,994,516.20 = 266,305,609.20/x - Step 3: Cross multiply
312,663,010.80x = 468,994,516.20 × 266,305,609.20 - Step 4: Simplify right side
312,663,010.80x = 124,895,870,348,100,256 - Step 5: Solve for x
x = 124,895,870,348,100,256/312,663,010.80 - Step 6: Final answer
x = 399,458,413.80
Related Problems
Find fourth proportional to 156,331,505.40, 234,497,258.10 and 133,152,804.60
Half scale
Find fourth proportional to 625,326,021.60, 937,989,032.40 and 532,611,218.40
Double scale
Find fourth proportional to 312,663,011.80, 468,994,517.70 and 266,305,610.20
Similar ratio
Find fourth proportional to 468,994,516.20, 703,491,774.30 and 399,458,413.80
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.