Finding the Fourth Proportional to 862,397.71, 1,181,489.09 and 830,075.05
Calculator
Solution
The fourth proportional to 862,397.71, 1,181,489.09 and 830,075.05 is: 1,137,206.89
Step by Step Solution
- Step 1: Write the proportion equation
862,397.71 : 1,181,489.09 = 830,075.05 : x - Step 2: Convert to fraction form
862,397.71/1,181,489.09 = 830,075.05/x - Step 3: Cross multiply
862,397.71x = 1,181,489.09 × 830,075.05 - Step 4: Simplify right side
862,397.71x = 980,724,615,456.21 - Step 5: Solve for x
x = 980,724,615,456.21/862,397.71 - Step 6: Final answer
x = 1,137,206.89
Related Problems
Find fourth proportional to 431,198.86, 590,744.55 and 415,037.53
Half scale
Find fourth proportional to 1,724,795.42, 2,362,978.18 and 1,660,150.10
Double scale
Find fourth proportional to 862,398.71, 1,181,490.46 and 830,076.05
Similar ratio
Find fourth proportional to 1,293,596.57, 1,772,233.64 and 1,245,112.58
1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.