Finding the Fourth Proportional to 831,309.69, 1,147,206.68 and 449,336.47
Calculator
Solution
The fourth proportional to 831,309.69, 1,147,206.68 and 449,336.47 is: 620,083.95
Step by Step Solution
- Step 1: Write the proportion equation
831,309.69 : 1,147,206.68 = 449,336.47 : x - Step 2: Convert to fraction form
831,309.69/1,147,206.68 = 449,336.47/x - Step 3: Cross multiply
831,309.69x = 1,147,206.68 × 449,336.47 - Step 4: Simplify right side
831,309.69x = 515,481,799,951.62 - Step 5: Solve for x
x = 515,481,799,951.62/831,309.69 - Step 6: Final answer
x = 620,083.95
Related Problems
Find fourth proportional to 415,654.85, 573,603.34 and 224,668.24
Half scale
Find fourth proportional to 1,662,619.38, 2,294,413.36 and 898,672.94
Double scale
Find fourth proportional to 831,310.69, 1,147,208.06 and 449,337.47
Similar ratio
Find fourth proportional to 1,246,964.54, 1,720,810.02 and 674,004.71
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.