Finding the Fourth Proportional to 656,461.75, 905,917.23 and 354,655.75
Calculator
Solution
The fourth proportional to 656,461.75, 905,917.23 and 354,655.75 is: 489,424.94
Step by Step Solution
- Step 1: Write the proportion equation
656,461.75 : 905,917.23 = 354,655.75 : x - Step 2: Convert to fraction form
656,461.75/905,917.23 = 354,655.75/x - Step 3: Cross multiply
656,461.75x = 905,917.23 × 354,655.75 - Step 4: Simplify right side
656,461.75x = 321,288,754,643.57 - Step 5: Solve for x
x = 321,288,754,643.57/656,461.75 - Step 6: Final answer
x = 489,424.94
Related Problems
Find fourth proportional to 328,230.88, 452,958.62 and 177,327.88
Half scale
Find fourth proportional to 1,312,923.50, 1,811,834.46 and 709,311.50
Double scale
Find fourth proportional to 656,462.75, 905,918.61 and 354,656.75
Similar ratio
Find fourth proportional to 984,692.63, 1,358,875.85 and 531,983.63
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.