Finding the Fourth Proportional to 677,828.58, 935,369.74 and 387,431.44
Calculator
Solution
The fourth proportional to 677,828.58, 935,369.74 and 387,431.44 is: 534,636.12
Step by Step Solution
- Step 1: Write the proportion equation
677,828.58 : 935,369.74 = 387,431.44 : x - Step 2: Convert to fraction form
677,828.58/935,369.74 = 387,431.44/x - Step 3: Cross multiply
677,828.58x = 935,369.74 × 387,431.44 - Step 4: Simplify right side
677,828.58x = 362,391,645,300.63 - Step 5: Solve for x
x = 362,391,645,300.63/677,828.58 - Step 6: Final answer
x = 534,636.12
Related Problems
Find fourth proportional to 338,914.29, 467,684.87 and 193,715.72
Half scale
Find fourth proportional to 1,355,657.16, 1,870,739.48 and 774,862.88
Double scale
Find fourth proportional to 677,829.58, 935,371.12 and 387,432.44
Similar ratio
Find fourth proportional to 1,016,742.87, 1,403,054.61 and 581,147.16
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.