Finding the Fourth Proportional to 438,419.80, 657,629.70 and 122,835.70
Calculator
Solution
The fourth proportional to 438,419.80, 657,629.70 and 122,835.70 is: 184,253.55
Step by Step Solution
- Step 1: Write the proportion equation
438,419.80 : 657,629.70 = 122,835.70 : x - Step 2: Convert to fraction form
438,419.80/657,629.70 = 122,835.70/x - Step 3: Cross multiply
438,419.80x = 657,629.70 × 122,835.70 - Step 4: Simplify right side
438,419.80x = 80,780,404,540.29 - Step 5: Solve for x
x = 80,780,404,540.29/438,419.80 - Step 6: Final answer
x = 184,253.55
Related Problems
Find fourth proportional to 219,209.90, 328,814.85 and 61,417.85
Half scale
Find fourth proportional to 876,839.60, 1,315,259.40 and 245,671.40
Double scale
Find fourth proportional to 438,420.80, 657,631.20 and 122,836.70
Similar ratio
Find fourth proportional to 657,629.70, 986,444.55 and 184,253.55
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.