Finding the Fourth Proportional to 495,979.86, 683,809.77 and 321,239.17
Calculator
Solution
The fourth proportional to 495,979.86, 683,809.77 and 321,239.17 is: 442,893.95
Step by Step Solution
- Step 1: Write the proportion equation
495,979.86 : 683,809.77 = 321,239.17 : x - Step 2: Convert to fraction form
495,979.86/683,809.77 = 321,239.17/x - Step 3: Cross multiply
495,979.86x = 683,809.77 × 321,239.17 - Step 4: Simplify right side
495,979.86x = 219,666,480,262.19 - Step 5: Solve for x
x = 219,666,480,262.19/495,979.86 - Step 6: Final answer
x = 442,893.95
Related Problems
Find fourth proportional to 247,989.93, 341,904.89 and 160,619.58
Half scale
Find fourth proportional to 991,959.72, 1,367,619.54 and 642,478.33
Double scale
Find fourth proportional to 495,980.86, 683,811.15 and 321,240.17
Similar ratio
Find fourth proportional to 743,969.79, 1,025,714.66 and 481,858.75
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.