Finding the Fourth Proportional to 992,801.70, 1,489,202.55 and 393,905.70
Calculator
Solution
The fourth proportional to 992,801.70, 1,489,202.55 and 393,905.70 is: 590,858.55
Step by Step Solution
- Step 1: Write the proportion equation
992,801.70 : 1,489,202.55 = 393,905.70 : x - Step 2: Convert to fraction form
992,801.70/1,489,202.55 = 393,905.70/x - Step 3: Cross multiply
992,801.70x = 1,489,202.55 × 393,905.70 - Step 4: Simplify right side
992,801.70x = 586,605,372,899.54 - Step 5: Solve for x
x = 586,605,372,899.54/992,801.70 - Step 6: Final answer
x = 590,858.55
Related Problems
Find fourth proportional to 496,400.85, 744,601.28 and 196,952.85
Half scale
Find fourth proportional to 1,985,603.40, 2,978,405.10 and 787,811.40
Double scale
Find fourth proportional to 992,802.70, 1,489,204.05 and 393,906.70
Similar ratio
Find fourth proportional to 1,489,202.55, 2,233,803.83 and 590,858.55
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.