Finding the Fourth Proportional to 857,725.80, 1,286,260.20 and 288,954.06
Calculator
Solution
The fourth proportional to 857,725.80, 1,286,260.20 and 288,954.06 is: 433,320.42
Step by Step Solution
- Step 1: Write the proportion equation
857,725.80 : 1,286,260.20 = 288,954.06 : x - Step 2: Convert to fraction form
857,725.80/1,286,260.20 = 288,954.06/x - Step 3: Cross multiply
857,725.80x = 1,286,260.20 × 288,954.06 - Step 4: Simplify right side
857,725.80x = 371,670,107,006.41 - Step 5: Solve for x
x = 371,670,107,006.41/857,725.80 - Step 6: Final answer
x = 433,320.42
Related Problems
Find fourth proportional to 428,862.90, 643,130.10 and 144,477.03
Half scale
Find fourth proportional to 1,715,451.60, 2,572,520.40 and 577,908.12
Double scale
Find fourth proportional to 857,726.80, 1,286,261.70 and 288,955.06
Similar ratio
Find fourth proportional to 1,286,588.70, 1,929,390.30 and 433,431.09
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.