Finding the Fourth Proportional to 852,369.12, 1,278,221.20 and 319,599.84
Calculator
Solution
The fourth proportional to 852,369.12, 1,278,221.20 and 319,599.84 is: 479,275.10
Step by Step Solution
- Step 1: Write the proportion equation
852,369.12 : 1,278,221.20 = 319,599.84 : x - Step 2: Convert to fraction form
852,369.12/1,278,221.20 = 319,599.84/x - Step 3: Cross multiply
852,369.12x = 1,278,221.20 × 319,599.84 - Step 4: Simplify right side
852,369.12x = 408,519,291,004.61 - Step 5: Solve for x
x = 408,519,291,004.61/852,369.12 - Step 6: Final answer
x = 479,275.10
Related Problems
Find fourth proportional to 426,184.56, 639,110.60 and 159,799.92
Half scale
Find fourth proportional to 1,704,738.24, 2,556,442.40 and 639,199.68
Double scale
Find fourth proportional to 852,370.12, 1,278,222.70 and 319,600.84
Similar ratio
Find fourth proportional to 1,278,553.68, 1,917,331.80 and 479,399.76
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.