Finding the Fourth Proportional to 379,705.09, 523,987.30 and 207,623.63
Calculator
Solution
The fourth proportional to 379,705.09, 523,987.30 and 207,623.63 is: 286,517.48
Step by Step Solution
- Step 1: Write the proportion equation
379,705.09 : 523,987.30 = 207,623.63 : x - Step 2: Convert to fraction form
379,705.09/523,987.30 = 207,623.63/x - Step 3: Cross multiply
379,705.09x = 523,987.30 × 207,623.63 - Step 4: Simplify right side
379,705.09x = 108,792,145,299.90 - Step 5: Solve for x
x = 108,792,145,299.90/379,705.09 - Step 6: Final answer
x = 286,517.48
Related Problems
Find fourth proportional to 189,852.55, 261,993.65 and 103,811.82
Half scale
Find fourth proportional to 759,410.18, 1,047,974.60 and 415,247.26
Double scale
Find fourth proportional to 379,706.09, 523,988.68 and 207,624.63
Similar ratio
Find fourth proportional to 569,557.64, 785,980.95 and 311,435.45
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.