Finding the Fourth Proportional to 703,997.55, 971,510.67 and 398,133.99
Calculator
Solution
The fourth proportional to 703,997.55, 971,510.67 and 398,133.99 is: 549,421.54
Step by Step Solution
- Step 1: Write the proportion equation
703,997.55 : 971,510.67 = 398,133.99 : x - Step 2: Convert to fraction form
703,997.55/971,510.67 = 398,133.99/x - Step 3: Cross multiply
703,997.55x = 971,510.67 × 398,133.99 - Step 4: Simplify right side
703,997.55x = 386,791,419,374.67 - Step 5: Solve for x
x = 386,791,419,374.67/703,997.55 - Step 6: Final answer
x = 549,421.54
Related Problems
Find fourth proportional to 351,998.78, 485,755.34 and 199,067.00
Half scale
Find fourth proportional to 1,407,995.10, 1,943,021.34 and 796,267.98
Double scale
Find fourth proportional to 703,998.55, 971,512.05 and 398,134.99
Similar ratio
Find fourth proportional to 1,055,996.33, 1,457,266.01 and 597,200.99
1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.