Finding the Fourth Proportional to 647,909.21, 893,894.24 and 393,211.19
Calculator
Solution
The fourth proportional to 647,909.21, 893,894.24 and 393,211.19 is: 542,497.64
Step by Step Solution
- Step 1: Write the proportion equation
647,909.21 : 893,894.24 = 393,211.19 : x - Step 2: Convert to fraction form
647,909.21/893,894.24 = 393,211.19/x - Step 3: Cross multiply
647,909.21x = 893,894.24 × 393,211.19 - Step 4: Simplify right side
647,909.21x = 351,489,221,062.31 - Step 5: Solve for x
x = 351,489,221,062.31/647,909.21 - Step 6: Final answer
x = 542,497.64
Related Problems
Find fourth proportional to 323,954.61, 446,947.12 and 196,605.60
Half scale
Find fourth proportional to 1,295,818.43, 1,787,788.49 and 786,422.39
Double scale
Find fourth proportional to 647,910.21, 893,895.62 and 393,212.19
Similar ratio
Find fourth proportional to 971,863.82, 1,340,841.36 and 589,816.79
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.