Finding the Fourth Proportional to 738,348.42, 1,018,920.80 and 398,816.67
Calculator
Solution
The fourth proportional to 738,348.42, 1,018,920.80 and 398,816.67 is: 550,366.99
Step by Step Solution
- Step 1: Write the proportion equation
738,348.42 : 1,018,920.80 = 398,816.67 : x - Step 2: Convert to fraction form
738,348.42/1,018,920.80 = 398,816.67/x - Step 3: Cross multiply
738,348.42x = 1,018,920.80 × 398,816.67 - Step 4: Simplify right side
738,348.42x = 406,362,598,455.65 - Step 5: Solve for x
x = 406,362,598,455.65/738,348.42 - Step 6: Final answer
x = 550,366.99
Related Problems
Find fourth proportional to 369,174.21, 509,460.40 and 199,408.34
Half scale
Find fourth proportional to 1,476,696.84, 2,037,841.59 and 797,633.34
Double scale
Find fourth proportional to 738,349.42, 1,018,922.17 and 398,817.67
Similar ratio
Find fourth proportional to 1,107,522.63, 1,528,381.19 and 598,225.01
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.