Finding the Fourth Proportional to 440,201.79, 605,139.66 and 378,721.98
Calculator
Solution
The fourth proportional to 440,201.79, 605,139.66 and 378,721.98 is: 520,624.17
Step by Step Solution
- Step 1: Write the proportion equation
440,201.79 : 605,139.66 = 378,721.98 : x - Step 2: Convert to fraction form
440,201.79/605,139.66 = 378,721.98/x - Step 3: Cross multiply
440,201.79x = 605,139.66 × 378,721.98 - Step 4: Simplify right side
440,201.79x = 229,179,690,211.73 - Step 5: Solve for x
x = 229,179,690,211.73/440,201.79 - Step 6: Final answer
x = 520,624.17
Related Problems
Find fourth proportional to 220,100.90, 302,569.83 and 189,360.99
Half scale
Find fourth proportional to 880,403.58, 1,210,279.32 and 757,443.96
Double scale
Find fourth proportional to 440,202.79, 605,141.03 and 378,722.98
Similar ratio
Find fourth proportional to 660,302.69, 907,709.49 and 568,082.97
1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.