Finding the Fourth Proportional to 485,752,416.24, 728,458,138.83 and 135,904,473.80
Calculator
Solution
The fourth proportional to 485,752,416.24, 728,458,138.83 and 135,904,473.80 is: 203,809,012.02
Step by Step Solution
- Step 1: Write the proportion equation
485,752,416.24 : 728,458,138.83 = 135,904,473.80 : x - Step 2: Convert to fraction form
485,752,416.24/728,458,138.83 = 135,904,473.80/x - Step 3: Cross multiply
485,752,416.24x = 728,458,138.83 × 135,904,473.80 - Step 4: Simplify right side
485,752,416.24x = 99,000,720,039,376,208 - Step 5: Solve for x
x = 99,000,720,039,376,208/485,752,416.24 - Step 6: Final answer
x = 203,809,012.02
Related Problems
Find fourth proportional to 242,876,208.12, 364,229,069.42 and 67,952,236.90
Half scale
Find fourth proportional to 971,504,832.48, 1,456,916,277.66 and 271,808,947.59
Double scale
Find fourth proportional to 485,752,417.24, 728,458,140.33 and 135,904,474.80
Similar ratio
Find fourth proportional to 728,628,624.36, 1,092,687,208.25 and 203,856,710.69
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.