Finding the Fourth Proportional to 539,990.69, 809,975.09 and 140,622.62
Calculator
Solution
The fourth proportional to 539,990.69, 809,975.09 and 140,622.62 is: 210,931.07
Step by Step Solution
- Step 1: Write the proportion equation
539,990.69 : 809,975.09 = 140,622.62 : x - Step 2: Convert to fraction form
539,990.69/809,975.09 = 140,622.62/x - Step 3: Cross multiply
539,990.69x = 809,975.09 × 140,622.62 - Step 4: Simplify right side
539,990.69x = 113,900,815,592.22 - Step 5: Solve for x
x = 113,900,815,592.22/539,990.69 - Step 6: Final answer
x = 210,931.07
Related Problems
Find fourth proportional to 269,995.34, 404,987.55 and 70,311.31
Half scale
Find fourth proportional to 1,079,981.37, 1,619,950.19 and 281,245.23
Double scale
Find fourth proportional to 539,991.69, 809,976.59 and 140,623.62
Similar ratio
Find fourth proportional to 809,986.03, 1,214,962.64 and 210,933.92
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.