Finding the Fourth Proportional to 419,346,381.06, 578,699,759.70 and 231,170,545.12
Calculator
Solution
The fourth proportional to 419,346,381.06, 578,699,759.70 and 231,170,545.12 is: 319,016,319.09
Step by Step Solution
- Step 1: Write the proportion equation
419,346,381.06 : 578,699,759.70 = 231,170,545.12 : x - Step 2: Convert to fraction form
419,346,381.06/578,699,759.70 = 231,170,545.12/x - Step 3: Cross multiply
419,346,381.06x = 578,699,759.70 × 231,170,545.12 - Step 4: Simplify right side
419,346,381.06x = 133,778,338,910,662,016 - Step 5: Solve for x
x = 133,778,338,910,662,016/419,346,381.06 - Step 6: Final answer
x = 319,016,319.09
Related Problems
Find fourth proportional to 209,673,190.53, 289,349,879.85 and 115,585,272.56
Half scale
Find fourth proportional to 838,692,762.12, 1,157,399,519.40 and 462,341,090.24
Double scale
Find fourth proportional to 419,346,382.06, 578,699,761.08 and 231,170,546.12
Similar ratio
Find fourth proportional to 629,019,571.59, 868,049,639.55 and 346,755,817.68
1.5x scale
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.