Finding the Fourth Proportional to 646,138.76, 891,651.64 and 359,651.48
Calculator
Solution
The fourth proportional to 646,138.76, 891,651.64 and 359,651.48 is: 496,307.99
Step by Step Solution
- Step 1: Write the proportion equation
646,138.76 : 891,651.64 = 359,651.48 : x - Step 2: Convert to fraction form
646,138.76/891,651.64 = 359,651.48/x - Step 3: Cross multiply
646,138.76x = 891,651.64 × 359,651.48 - Step 4: Simplify right side
646,138.76x = 320,683,831,970.43 - Step 5: Solve for x
x = 320,683,831,970.43/646,138.76 - Step 6: Final answer
x = 496,307.99
Related Problems
Find fourth proportional to 323,069.38, 445,825.82 and 179,825.74
Half scale
Find fourth proportional to 1,292,277.52, 1,783,303.28 and 719,302.96
Double scale
Find fourth proportional to 646,139.76, 891,653.02 and 359,652.48
Similar ratio
Find fourth proportional to 969,208.14, 1,337,477.46 and 539,477.22
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.