Finding the Fourth Proportional to 820,379.62, 1,132,121.76 and 457,799.68
Calculator
Solution
The fourth proportional to 820,379.62, 1,132,121.76 and 457,799.68 is: 631,762.38
Step by Step Solution
- Step 1: Write the proportion equation
820,379.62 : 1,132,121.76 = 457,799.68 : x - Step 2: Convert to fraction form
820,379.62/1,132,121.76 = 457,799.68/x - Step 3: Cross multiply
820,379.62x = 1,132,121.76 × 457,799.68 - Step 4: Simplify right side
820,379.62x = 518,284,979,449.04 - Step 5: Solve for x
x = 518,284,979,449.04/820,379.62 - Step 6: Final answer
x = 631,762.38
Related Problems
Find fourth proportional to 410,189.81, 566,060.88 and 228,899.84
Half scale
Find fourth proportional to 1,640,759.24, 2,264,243.52 and 915,599.36
Double scale
Find fourth proportional to 820,380.62, 1,132,123.14 and 457,800.68
Similar ratio
Find fourth proportional to 1,230,569.43, 1,698,182.64 and 686,699.52
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.