Finding the Fourth Proportional to 789,158.68, 1,089,036.84 and 449,629.36
Calculator
Solution
The fourth proportional to 789,158.68, 1,089,036.84 and 449,629.36 is: 620,487.30
Step by Step Solution
- Step 1: Write the proportion equation
789,158.68 : 1,089,036.84 = 449,629.36 : x - Step 2: Convert to fraction form
789,158.68/1,089,036.84 = 449,629.36/x - Step 3: Cross multiply
789,158.68x = 1,089,036.84 × 449,629.36 - Step 4: Simplify right side
789,158.68x = 489,662,937,385.62 - Step 5: Solve for x
x = 489,662,937,385.62/789,158.68 - Step 6: Final answer
x = 620,487.30
Related Problems
Find fourth proportional to 394,579.34, 544,518.42 and 224,814.68
Half scale
Find fourth proportional to 1,578,317.36, 2,178,073.68 and 899,258.72
Double scale
Find fourth proportional to 789,159.68, 1,089,038.22 and 449,630.36
Similar ratio
Find fourth proportional to 1,183,738.02, 1,633,555.26 and 674,444.04
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.