Finding the Fourth Proportional to 860,403.20, 1,186,645.40 and 722,038.96
Calculator
Solution
The fourth proportional to 860,403.20, 1,186,645.40 and 722,038.96 is: 995,817.09
Step by Step Solution
- Step 1: Write the proportion equation
860,403.20 : 1,186,645.40 = 722,038.96 : x - Step 2: Convert to fraction form
860,403.20/1,186,645.40 = 722,038.96/x - Step 3: Cross multiply
860,403.20x = 1,186,645.40 × 722,038.96 - Step 4: Simplify right side
860,403.20x = 856,804,210,504.78 - Step 5: Solve for x
x = 856,804,210,504.78/860,403.20 - Step 6: Final answer
x = 995,817.09
Related Problems
Find fourth proportional to 430,201.60, 593,322.70 and 361,019.48
Half scale
Find fourth proportional to 1,720,806.40, 2,373,290.80 and 1,444,077.92
Double scale
Find fourth proportional to 860,404.20, 1,186,646.78 and 722,039.96
Similar ratio
Find fourth proportional to 1,290,604.80, 1,779,968.10 and 1,083,058.44
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.