Finding the Fourth Proportional to 814,571.80, 1,221,857.70 and 761,427.70
Calculator
Solution
The fourth proportional to 814,571.80, 1,221,857.70 and 761,427.70 is: 1,142,141.55
Step by Step Solution
- Step 1: Write the proportion equation
814,571.80 : 1,221,857.70 = 761,427.70 : x - Step 2: Convert to fraction form
814,571.80/1,221,857.70 = 761,427.70/x - Step 3: Cross multiply
814,571.80x = 1,221,857.70 × 761,427.70 - Step 4: Simplify right side
814,571.80x = 930,356,298,238.29 - Step 5: Solve for x
x = 930,356,298,238.29/814,571.80 - Step 6: Final answer
x = 1,142,141.55
Related Problems
Find fourth proportional to 407,285.90, 610,928.85 and 380,713.85
Half scale
Find fourth proportional to 1,629,143.60, 2,443,715.40 and 1,522,855.40
Double scale
Find fourth proportional to 814,572.80, 1,221,859.20 and 761,428.70
Similar ratio
Find fourth proportional to 1,221,857.70, 1,832,786.55 and 1,142,141.55
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.