Finding the Fourth Proportional to 903,318.84, 1,243,451.16 and 780,755.40
Calculator
Solution
The fourth proportional to 903,318.84, 1,243,451.16 and 780,755.40 is: 1,074,738.14
Step by Step Solution
- Step 1: Write the proportion equation
903,318.84 : 1,243,451.16 = 780,755.40 : x - Step 2: Convert to fraction form
903,318.84/1,243,451.16 = 780,755.40/x - Step 3: Cross multiply
903,318.84x = 1,243,451.16 × 780,755.40 - Step 4: Simplify right side
903,318.84x = 970,831,207,806.26 - Step 5: Solve for x
x = 970,831,207,806.26/903,318.84 - Step 6: Final answer
x = 1,074,738.14
Related Problems
Find fourth proportional to 451,659.42, 621,725.58 and 390,377.70
Half scale
Find fourth proportional to 1,806,637.68, 2,486,902.32 and 1,561,510.80
Double scale
Find fourth proportional to 903,319.84, 1,243,452.54 and 780,756.40
Similar ratio
Find fourth proportional to 1,354,978.26, 1,865,176.74 and 1,171,133.10
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.