Finding the Fourth Proportional to 399,215,400.80, 598,823,101.20 and 126,586,167.80
Calculator
Solution
The fourth proportional to 399,215,400.80, 598,823,101.20 and 126,586,167.80 is: 189,879,251.70
Step by Step Solution
- Step 1: Write the proportion equation
399,215,400.80 : 598,823,101.20 = 126,586,167.80 : x - Step 2: Convert to fraction form
399,215,400.80/598,823,101.20 = 126,586,167.80/x - Step 3: Cross multiply
399,215,400.80x = 598,823,101.20 × 126,586,167.80 - Step 4: Simplify right side
399,215,400.80x = 75,802,721,571,019,584 - Step 5: Solve for x
x = 75,802,721,571,019,584/399,215,400.80 - Step 6: Final answer
x = 189,879,251.70
Related Problems
Find fourth proportional to 199,607,700.40, 299,411,550.60 and 63,293,083.90
Half scale
Find fourth proportional to 798,430,801.60, 1,197,646,202.40 and 253,172,335.60
Double scale
Find fourth proportional to 399,215,401.80, 598,823,102.70 and 126,586,168.80
Similar ratio
Find fourth proportional to 598,823,101.20, 898,234,651.80 and 189,879,251.70
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.