Finding the Fourth Proportional to 412,316.50, 618,548.58 and 212,583.28
Calculator
Solution
The fourth proportional to 412,316.50, 618,548.58 and 212,583.28 is: 318,912.99
Step by Step Solution
- Step 1: Write the proportion equation
412,316.50 : 618,548.58 = 212,583.28 : x - Step 2: Convert to fraction form
412,316.50/618,548.58 = 212,583.28/x - Step 3: Cross multiply
412,316.50x = 618,548.58 × 212,583.28 - Step 4: Simplify right side
412,316.50x = 131,493,085,975.74 - Step 5: Solve for x
x = 131,493,085,975.74/412,316.50 - Step 6: Final answer
x = 318,912.99
Related Problems
Find fourth proportional to 206,158.25, 309,274.29 and 106,291.64
Half scale
Find fourth proportional to 824,633, 1,237,097.16 and 425,166.56
Double scale
Find fourth proportional to 412,317.50, 618,550.08 and 212,584.28
Similar ratio
Find fourth proportional to 618,474.75, 927,822.87 and 318,874.92
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.