Finding the Fourth Proportional to 743,687.84, 1,025,911.49 and 485,715.94
Calculator
Solution
The fourth proportional to 743,687.84, 1,025,911.49 and 485,715.94 is: 670,041.29
Step by Step Solution
- Step 1: Write the proportion equation
743,687.84 : 1,025,911.49 = 485,715.94 : x - Step 2: Convert to fraction form
743,687.84/1,025,911.49 = 485,715.94/x - Step 3: Cross multiply
743,687.84x = 1,025,911.49 × 485,715.94 - Step 4: Simplify right side
743,687.84x = 498,301,558,728.79 - Step 5: Solve for x
x = 498,301,558,728.79/743,687.84 - Step 6: Final answer
x = 670,041.29
Related Problems
Find fourth proportional to 371,843.92, 512,955.74 and 242,857.97
Half scale
Find fourth proportional to 1,487,375.69, 2,051,822.97 and 971,431.88
Double scale
Find fourth proportional to 743,688.84, 1,025,912.86 and 485,716.94
Similar ratio
Find fourth proportional to 1,115,531.76, 1,538,867.23 and 728,573.91
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.