Finding the Fourth Proportional to 422,746.80, 634,465.80 and 408,922.80
Calculator
Solution
The fourth proportional to 422,746.80, 634,465.80 and 408,922.80 is: 613,718.50
Step by Step Solution
- Step 1: Write the proportion equation
422,746.80 : 634,465.80 = 408,922.80 : x - Step 2: Convert to fraction form
422,746.80/634,465.80 = 408,922.80/x - Step 3: Cross multiply
422,746.80x = 634,465.80 × 408,922.80 - Step 4: Simplify right side
422,746.80x = 259,447,531,440.24 - Step 5: Solve for x
x = 259,447,531,440.24/422,746.80 - Step 6: Final answer
x = 613,718.50
Related Problems
Find fourth proportional to 211,373.40, 317,232.90 and 204,461.40
Half scale
Find fourth proportional to 845,493.60, 1,268,931.60 and 817,845.60
Double scale
Find fourth proportional to 422,747.80, 634,467.30 and 408,923.80
Similar ratio
Find fourth proportional to 634,120.20, 951,698.70 and 613,384.20
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.