Finding the Fourth Proportional to 756,989.80, 1,135,484.70 and 307,561.30
Calculator
Solution
The fourth proportional to 756,989.80, 1,135,484.70 and 307,561.30 is: 461,341.95
Step by Step Solution
- Step 1: Write the proportion equation
756,989.80 : 1,135,484.70 = 307,561.30 : x - Step 2: Convert to fraction form
756,989.80/1,135,484.70 = 307,561.30/x - Step 3: Cross multiply
756,989.80x = 1,135,484.70 × 307,561.30 - Step 4: Simplify right side
756,989.80x = 349,231,150,462.11 - Step 5: Solve for x
x = 349,231,150,462.11/756,989.80 - Step 6: Final answer
x = 461,341.95
Related Problems
Find fourth proportional to 378,494.90, 567,742.35 and 153,780.65
Half scale
Find fourth proportional to 1,513,979.60, 2,270,969.40 and 615,122.60
Double scale
Find fourth proportional to 756,990.80, 1,135,486.20 and 307,562.30
Similar ratio
Find fourth proportional to 1,135,484.70, 1,703,227.05 and 461,341.95
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.