Finding the Fourth Proportional to 637,687.20, 879,967.98 and 351,207.30
Calculator
Solution
The fourth proportional to 637,687.20, 879,967.98 and 351,207.30 is: 484,643.85
Step by Step Solution
- Step 1: Write the proportion equation
637,687.20 : 879,967.98 = 351,207.30 : x - Step 2: Convert to fraction form
637,687.20/879,967.98 = 351,207.30/x - Step 3: Cross multiply
637,687.20x = 879,967.98 × 351,207.30 - Step 4: Simplify right side
637,687.20x = 309,051,178,342.25 - Step 5: Solve for x
x = 309,051,178,342.25/637,687.20 - Step 6: Final answer
x = 484,643.85
Related Problems
Find fourth proportional to 318,843.60, 439,983.99 and 175,603.65
Half scale
Find fourth proportional to 1,275,374.40, 1,759,935.96 and 702,414.60
Double scale
Find fourth proportional to 637,688.20, 879,969.36 and 351,208.30
Similar ratio
Find fourth proportional to 956,530.80, 1,319,951.97 and 526,810.95
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.