Finding the Fourth Proportional to 449,649.22, 620,641.05 and 258,724.12
Calculator
Solution
The fourth proportional to 449,649.22, 620,641.05 and 258,724.12 is: 357,111.28
Step by Step Solution
- Step 1: Write the proportion equation
449,649.22 : 620,641.05 = 258,724.12 : x - Step 2: Convert to fraction form
449,649.22/620,641.05 = 258,724.12/x - Step 3: Cross multiply
449,649.22x = 620,641.05 × 258,724.12 - Step 4: Simplify right side
449,649.22x = 160,574,809,497.13 - Step 5: Solve for x
x = 160,574,809,497.13/449,649.22 - Step 6: Final answer
x = 357,111.28
Related Problems
Find fourth proportional to 224,824.61, 310,320.53 and 129,362.06
Half scale
Find fourth proportional to 899,298.44, 1,241,282.10 and 517,448.24
Double scale
Find fourth proportional to 449,650.22, 620,642.43 and 258,725.12
Similar ratio
Find fourth proportional to 674,473.83, 930,961.58 and 388,086.18
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.