Finding the Fourth Proportional to 652,235.70, 978,353.55 and 403,403.70
Calculator
Solution
The fourth proportional to 652,235.70, 978,353.55 and 403,403.70 is: 605,105.55
Step by Step Solution
- Step 1: Write the proportion equation
652,235.70 : 978,353.55 = 403,403.70 : x - Step 2: Convert to fraction form
652,235.70/978,353.55 = 403,403.70/x - Step 3: Cross multiply
652,235.70x = 978,353.55 × 403,403.70 - Step 4: Simplify right side
652,235.70x = 394,671,441,978.14 - Step 5: Solve for x
x = 394,671,441,978.14/652,235.70 - Step 6: Final answer
x = 605,105.55
Related Problems
Find fourth proportional to 326,117.85, 489,176.78 and 201,701.85
Half scale
Find fourth proportional to 1,304,471.40, 1,956,707.10 and 806,807.40
Double scale
Find fourth proportional to 652,236.70, 978,355.05 and 403,404.70
Similar ratio
Find fourth proportional to 978,353.55, 1,467,530.33 and 605,105.55
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.