Finding the Fourth Proportional to 722,208.62, 996,635.64 and 399,911.80
Calculator
Solution
The fourth proportional to 722,208.62, 996,635.64 and 399,911.80 is: 551,871.49
Step by Step Solution
- Step 1: Write the proportion equation
722,208.62 : 996,635.64 = 399,911.80 : x - Step 2: Convert to fraction form
722,208.62/996,635.64 = 399,911.80/x - Step 3: Cross multiply
722,208.62x = 996,635.64 × 399,911.80 - Step 4: Simplify right side
722,208.62x = 398,566,348,245.40 - Step 5: Solve for x
x = 398,566,348,245.40/722,208.62 - Step 6: Final answer
x = 551,871.49
Related Problems
Find fourth proportional to 361,104.31, 498,317.82 and 199,955.90
Half scale
Find fourth proportional to 1,444,417.24, 1,993,271.27 and 799,823.60
Double scale
Find fourth proportional to 722,209.62, 996,637.01 and 399,912.80
Similar ratio
Find fourth proportional to 1,083,312.93, 1,494,953.45 and 599,867.70
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.