Finding the Fourth Proportional to 981,277.10, 1,471,963.18 and 271,289.42
Calculator
Solution
The fourth proportional to 981,277.10, 1,471,963.18 and 271,289.42 is: 406,947.27
Step by Step Solution
- Step 1: Write the proportion equation
981,277.10 : 1,471,963.18 = 271,289.42 : x - Step 2: Convert to fraction form
981,277.10/1,471,963.18 = 271,289.42/x - Step 3: Cross multiply
981,277.10x = 1,471,963.18 × 271,289.42 - Step 4: Simplify right side
981,277.10x = 399,328,037,363.56 - Step 5: Solve for x
x = 399,328,037,363.56/981,277.10 - Step 6: Final answer
x = 406,947.27
Related Problems
Find fourth proportional to 490,638.55, 735,981.59 and 135,644.71
Half scale
Find fourth proportional to 1,962,554.20, 2,943,926.36 and 542,578.84
Double scale
Find fourth proportional to 981,278.10, 1,471,964.68 and 271,290.42
Similar ratio
Find fourth proportional to 1,471,915.65, 2,207,944.77 and 406,934.13
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.