Finding the Fourth Proportional to 978,354.24, 1,349,556.80 and 615,203.20
Calculator
Solution
The fourth proportional to 978,354.24, 1,349,556.80 and 615,203.20 is: 848,620.70
Step by Step Solution
- Step 1: Write the proportion equation
978,354.24 : 1,349,556.80 = 615,203.20 : x - Step 2: Convert to fraction form
978,354.24/1,349,556.80 = 615,203.20/x - Step 3: Cross multiply
978,354.24x = 1,349,556.80 × 615,203.20 - Step 4: Simplify right side
978,354.24x = 830,251,661,941.76 - Step 5: Solve for x
x = 830,251,661,941.76/978,354.24 - Step 6: Final answer
x = 848,620.70
Related Problems
Find fourth proportional to 489,177.12, 674,778.40 and 307,601.60
Half scale
Find fourth proportional to 1,956,708.48, 2,699,113.60 and 1,230,406.40
Double scale
Find fourth proportional to 978,355.24, 1,349,558.18 and 615,204.20
Similar ratio
Find fourth proportional to 1,467,531.36, 2,024,335.20 and 922,804.80
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.