Finding the Fourth Proportional to 891,585.20, 1,338,252.60 and 442,812.80
Calculator
Solution
The fourth proportional to 891,585.20, 1,338,252.60 and 442,812.80 is: 664,653.68
Step by Step Solution
- Step 1: Write the proportion equation
891,585.20 : 1,338,252.60 = 442,812.80 : x - Step 2: Convert to fraction form
891,585.20/1,338,252.60 = 442,812.80/x - Step 3: Cross multiply
891,585.20x = 1,338,252.60 × 442,812.80 - Step 4: Simplify right side
891,585.20x = 592,595,380,913.28 - Step 5: Solve for x
x = 592,595,380,913.28/891,585.20 - Step 6: Final answer
x = 664,653.68
Related Problems
Find fourth proportional to 445,792.60, 669,126.30 and 221,406.40
Half scale
Find fourth proportional to 1,783,170.40, 2,676,505.20 and 885,625.60
Double scale
Find fourth proportional to 891,586.20, 1,338,254.10 and 442,813.80
Similar ratio
Find fourth proportional to 1,337,377.80, 2,007,378.90 and 664,219.20
1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.