Finding the Fourth Proportional to 696,446.65, 961,136.40 and 390,621.13
Calculator
Solution
The fourth proportional to 696,446.65, 961,136.40 and 390,621.13 is: 539,079.61
Step by Step Solution
- Step 1: Write the proportion equation
696,446.65 : 961,136.40 = 390,621.13 : x - Step 2: Convert to fraction form
696,446.65/961,136.40 = 390,621.13/x - Step 3: Cross multiply
696,446.65x = 961,136.40 × 390,621.13 - Step 4: Simplify right side
696,446.65x = 375,440,186,652.13 - Step 5: Solve for x
x = 375,440,186,652.13/696,446.65 - Step 6: Final answer
x = 539,079.61
Related Problems
Find fourth proportional to 348,223.33, 480,568.20 and 195,310.57
Half scale
Find fourth proportional to 1,392,893.30, 1,922,272.80 and 781,242.26
Double scale
Find fourth proportional to 696,447.65, 961,137.78 and 390,622.13
Similar ratio
Find fourth proportional to 1,044,669.98, 1,441,704.60 and 585,931.70
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.