Finding the Fourth Proportional to 804,937.80, 1,207,406.70 and 213,961.80
Calculator
Solution
The fourth proportional to 804,937.80, 1,207,406.70 and 213,961.80 is: 320,942.70
Step by Step Solution
- Step 1: Write the proportion equation
804,937.80 : 1,207,406.70 = 213,961.80 : x - Step 2: Convert to fraction form
804,937.80/1,207,406.70 = 213,961.80/x - Step 3: Cross multiply
804,937.80x = 1,207,406.70 × 213,961.80 - Step 4: Simplify right side
804,937.80x = 258,338,910,864.06 - Step 5: Solve for x
x = 258,338,910,864.06/804,937.80 - Step 6: Final answer
x = 320,942.70
Related Problems
Find fourth proportional to 402,468.90, 603,703.35 and 106,980.90
Half scale
Find fourth proportional to 1,609,875.60, 2,414,813.40 and 427,923.60
Double scale
Find fourth proportional to 804,938.80, 1,207,408.20 and 213,962.80
Similar ratio
Find fourth proportional to 1,207,406.70, 1,811,110.05 and 320,942.70
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.