Finding the Fourth Proportional to 857,086.68, 1,285,632.18 and 258,049.56
Calculator
Solution
The fourth proportional to 857,086.68, 1,285,632.18 and 258,049.56 is: 387,074.99
Step by Step Solution
- Step 1: Write the proportion equation
857,086.68 : 1,285,632.18 = 258,049.56 : x - Step 2: Convert to fraction form
857,086.68/1,285,632.18 = 258,049.56/x - Step 3: Cross multiply
857,086.68x = 1,285,632.18 × 258,049.56 - Step 4: Simplify right side
857,086.68x = 331,756,818,370.84 - Step 5: Solve for x
x = 331,756,818,370.84/857,086.68 - Step 6: Final answer
x = 387,074.99
Related Problems
Find fourth proportional to 428,543.34, 642,816.09 and 129,024.78
Half scale
Find fourth proportional to 1,714,173.36, 2,571,264.36 and 516,099.12
Double scale
Find fourth proportional to 857,087.68, 1,285,633.68 and 258,050.56
Similar ratio
Find fourth proportional to 1,285,630.02, 1,928,448.27 and 387,074.34
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.