Finding the Fourth Proportional to 551,419.80, 827,129.70 and 218,995.80
Calculator
Solution
The fourth proportional to 551,419.80, 827,129.70 and 218,995.80 is: 328,493.70
Step by Step Solution
- Step 1: Write the proportion equation
551,419.80 : 827,129.70 = 218,995.80 : x - Step 2: Convert to fraction form
551,419.80/827,129.70 = 218,995.80/x - Step 3: Cross multiply
551,419.80x = 827,129.70 × 218,995.80 - Step 4: Simplify right side
551,419.80x = 181,137,930,355.26 - Step 5: Solve for x
x = 181,137,930,355.26/551,419.80 - Step 6: Final answer
x = 328,493.70
Related Problems
Find fourth proportional to 275,709.90, 413,564.85 and 109,497.90
Half scale
Find fourth proportional to 1,102,839.60, 1,654,259.40 and 437,991.60
Double scale
Find fourth proportional to 551,420.80, 827,131.20 and 218,996.80
Similar ratio
Find fourth proportional to 827,129.70, 1,240,694.55 and 328,493.70
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.