Finding the Fourth Proportional to 669,382.47, 923,738.36 and 378,986.55
Calculator
Solution
The fourth proportional to 669,382.47, 923,738.36 and 378,986.55 is: 522,996.09
Step by Step Solution
- Step 1: Write the proportion equation
669,382.47 : 923,738.36 = 378,986.55 : x - Step 2: Convert to fraction form
669,382.47/923,738.36 = 378,986.55/x - Step 3: Cross multiply
669,382.47x = 923,738.36 × 378,986.55 - Step 4: Simplify right side
669,382.47x = 350,084,412,264.13 - Step 5: Solve for x
x = 350,084,412,264.13/669,382.47 - Step 6: Final answer
x = 522,996.09
Related Problems
Find fourth proportional to 334,691.24, 461,869.18 and 189,493.28
Half scale
Find fourth proportional to 1,338,764.94, 1,847,476.71 and 757,973.10
Double scale
Find fourth proportional to 669,383.47, 923,739.73 and 378,987.55
Similar ratio
Find fourth proportional to 1,004,073.71, 1,385,607.53 and 568,479.83
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.