Finding the Fourth Proportional to 898,395.20, 1,239,891.36 and 516,438.08
Calculator
Solution
The fourth proportional to 898,395.20, 1,239,891.36 and 516,438.08 is: 712,745.47
Step by Step Solution
- Step 1: Write the proportion equation
898,395.20 : 1,239,891.36 = 516,438.08 : x - Step 2: Convert to fraction form
898,395.20/1,239,891.36 = 516,438.08/x - Step 3: Cross multiply
898,395.20x = 1,239,891.36 × 516,438.08 - Step 4: Simplify right side
898,395.20x = 640,327,113,366.99 - Step 5: Solve for x
x = 640,327,113,366.99/898,395.20 - Step 6: Final answer
x = 712,745.47
Related Problems
Find fourth proportional to 449,197.60, 619,945.68 and 258,219.04
Half scale
Find fourth proportional to 1,796,790.40, 2,479,782.72 and 1,032,876.16
Double scale
Find fourth proportional to 898,396.20, 1,239,892.74 and 516,439.08
Similar ratio
Find fourth proportional to 1,347,592.80, 1,859,837.04 and 774,657.12
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.