Finding the Fourth Proportional to 690,279.84, 1,035,667.44 and 269,857.44
Calculator
Solution
The fourth proportional to 690,279.84, 1,035,667.44 and 269,857.44 is: 404,882.99
Step by Step Solution
- Step 1: Write the proportion equation
690,279.84 : 1,035,667.44 = 269,857.44 : x - Step 2: Convert to fraction form
690,279.84/1,035,667.44 = 269,857.44/x - Step 3: Cross multiply
690,279.84x = 1,035,667.44 × 269,857.44 - Step 4: Simplify right side
690,279.84x = 279,482,564,049.75 - Step 5: Solve for x
x = 279,482,564,049.75/690,279.84 - Step 6: Final answer
x = 404,882.99
Related Problems
Find fourth proportional to 345,139.92, 517,833.72 and 134,928.72
Half scale
Find fourth proportional to 1,380,559.68, 2,071,334.88 and 539,714.88
Double scale
Find fourth proportional to 690,280.84, 1,035,668.94 and 269,858.44
Similar ratio
Find fourth proportional to 1,035,419.76, 1,553,501.16 and 404,786.16
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.