Finding the Fourth Proportional to 436,207.20, 602,424.87 and 388,657.28
Calculator
Solution
The fourth proportional to 436,207.20, 602,424.87 and 388,657.28 is: 536,755.95
Step by Step Solution
- Step 1: Write the proportion equation
436,207.20 : 602,424.87 = 388,657.28 : x - Step 2: Convert to fraction form
436,207.20/602,424.87 = 388,657.28/x - Step 3: Cross multiply
436,207.20x = 602,424.87 × 388,657.28 - Step 4: Simplify right side
436,207.20x = 234,136,808,366.43 - Step 5: Solve for x
x = 234,136,808,366.43/436,207.20 - Step 6: Final answer
x = 536,755.95
Related Problems
Find fourth proportional to 218,103.60, 301,212.44 and 194,328.64
Half scale
Find fourth proportional to 872,414.40, 1,204,849.74 and 777,314.55
Double scale
Find fourth proportional to 436,208.20, 602,426.25 and 388,658.28
Similar ratio
Find fourth proportional to 654,310.80, 903,637.31 and 582,985.91
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.