Finding the Fourth Proportional to 907,956, 1,361,430.72 and 421,107.12
Calculator
Solution
The fourth proportional to 907,956, 1,361,430.72 and 421,107.12 is: 631,427.26
Step by Step Solution
- Step 1: Write the proportion equation
907,956 : 1,361,430.72 = 421,107.12 : x - Step 2: Convert to fraction form
907,956/1,361,430.72 = 421,107.12/x - Step 3: Cross multiply
907,956x = 1,361,430.72 × 421,107.12 - Step 4: Simplify right side
907,956x = 573,308,169,578.73 - Step 5: Solve for x
x = 573,308,169,578.73/907,956 - Step 6: Final answer
x = 631,427.26
Related Problems
Find fourth proportional to 453,978, 680,715.36 and 210,553.56
Half scale
Find fourth proportional to 1,815,912, 2,722,861.44 and 842,214.24
Double scale
Find fourth proportional to 907,957, 1,361,432.22 and 421,108.12
Similar ratio
Find fourth proportional to 1,361,934, 2,042,146.08 and 631,660.68
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.