Finding the Fourth Proportional to 611,286.10, 917,366.55 and 256,554.70
Calculator
Solution
The fourth proportional to 611,286.10, 917,366.55 and 256,554.70 is: 385,015.63
Step by Step Solution
- Step 1: Write the proportion equation
611,286.10 : 917,366.55 = 256,554.70 : x - Step 2: Convert to fraction form
611,286.10/917,366.55 = 256,554.70/x - Step 3: Cross multiply
611,286.10x = 917,366.55 × 256,554.70 - Step 4: Simplify right side
611,286.10x = 235,354,700,025.29 - Step 5: Solve for x
x = 235,354,700,025.29/611,286.10 - Step 6: Final answer
x = 385,015.63
Related Problems
Find fourth proportional to 305,643.05, 458,683.28 and 128,277.35
Half scale
Find fourth proportional to 1,222,572.20, 1,834,733.10 and 513,109.40
Double scale
Find fourth proportional to 611,287.10, 917,368.05 and 256,555.70
Similar ratio
Find fourth proportional to 916,929.15, 1,376,049.83 and 384,832.05
1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.