Finding the Fourth Proportional to 938,628.18, 1,407,107.07 and 339,456.15
Calculator
Solution
The fourth proportional to 938,628.18, 1,407,107.07 and 339,456.15 is: 508,882.17
Step by Step Solution
- Step 1: Write the proportion equation
938,628.18 : 1,407,107.07 = 339,456.15 : x - Step 2: Convert to fraction form
938,628.18/1,407,107.07 = 339,456.15/x - Step 3: Cross multiply
938,628.18x = 1,407,107.07 × 339,456.15 - Step 4: Simplify right side
938,628.18x = 477,651,148,619.98 - Step 5: Solve for x
x = 477,651,148,619.98/938,628.18 - Step 6: Final answer
x = 508,882.17
Related Problems
Find fourth proportional to 469,314.09, 703,553.54 and 169,728.08
Half scale
Find fourth proportional to 1,877,256.36, 2,814,214.14 and 678,912.30
Double scale
Find fourth proportional to 938,629.18, 1,407,108.57 and 339,457.15
Similar ratio
Find fourth proportional to 1,407,942.27, 2,110,660.61 and 509,184.23
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.