Finding the Fourth Proportional to 823,455.20, 1,234,326.40 and 318,363.08
Calculator
Solution
The fourth proportional to 823,455.20, 1,234,326.40 and 318,363.08 is: 477,213.52
Step by Step Solution
- Step 1: Write the proportion equation
823,455.20 : 1,234,326.40 = 318,363.08 : x - Step 2: Convert to fraction form
823,455.20/1,234,326.40 = 318,363.08/x - Step 3: Cross multiply
823,455.20x = 1,234,326.40 × 318,363.08 - Step 4: Simplify right side
823,455.20x = 392,963,954,429.31 - Step 5: Solve for x
x = 392,963,954,429.31/823,455.20 - Step 6: Final answer
x = 477,213.52
Related Problems
Find fourth proportional to 411,727.60, 617,163.20 and 159,181.54
Half scale
Find fourth proportional to 1,646,910.40, 2,468,652.80 and 636,726.16
Double scale
Find fourth proportional to 823,456.20, 1,234,327.90 and 318,364.08
Similar ratio
Find fourth proportional to 1,235,182.80, 1,851,489.60 and 477,544.62
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.