Finding the Fourth Proportional to 783,784.79, 1,081,665.80 and 439,729.70
Calculator
Solution
The fourth proportional to 783,784.79, 1,081,665.80 and 439,729.70 is: 606,850.99
Step by Step Solution
- Step 1: Write the proportion equation
783,784.79 : 1,081,665.80 = 439,729.70 : x - Step 2: Convert to fraction form
783,784.79/1,081,665.80 = 439,729.70/x - Step 3: Cross multiply
783,784.79x = 1,081,665.80 × 439,729.70 - Step 4: Simplify right side
783,784.79x = 475,640,571,776.27 - Step 5: Solve for x
x = 475,640,571,776.27/783,784.79 - Step 6: Final answer
x = 606,850.99
Related Problems
Find fourth proportional to 391,892.39, 540,832.90 and 219,864.85
Half scale
Find fourth proportional to 1,567,569.58, 2,163,331.60 and 879,459.39
Double scale
Find fourth proportional to 783,785.79, 1,081,667.18 and 439,730.70
Similar ratio
Find fourth proportional to 1,175,677.18, 1,622,498.70 and 659,594.54
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.