Finding the Fourth Proportional to 767,990.08, 1,059,826.98 and 428,458.42
Calculator
Solution
The fourth proportional to 767,990.08, 1,059,826.98 and 428,458.42 is: 591,272.99
Step by Step Solution
- Step 1: Write the proportion equation
767,990.08 : 1,059,826.98 = 428,458.42 : x - Step 2: Convert to fraction form
767,990.08/1,059,826.98 = 428,458.42/x - Step 3: Cross multiply
767,990.08x = 1,059,826.98 × 428,458.42 - Step 4: Simplify right side
767,990.08x = 454,091,793,324.17 - Step 5: Solve for x
x = 454,091,793,324.17/767,990.08 - Step 6: Final answer
x = 591,272.99
Related Problems
Find fourth proportional to 383,995.04, 529,913.49 and 214,229.21
Half scale
Find fourth proportional to 1,535,980.16, 2,119,653.96 and 856,916.84
Double scale
Find fourth proportional to 767,991.08, 1,059,828.36 and 428,459.42
Similar ratio
Find fourth proportional to 1,151,985.12, 1,589,740.47 and 642,687.63
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.