Finding the Fourth Proportional to 725,039.80, 1,087,559.70 and 305,135.80
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Solution
The fourth proportional to 725,039.80, 1,087,559.70 and 305,135.80 is: 457,703.70
Step by Step Solution
- Step 1: Write the proportion equation
725,039.80 : 1,087,559.70 = 305,135.80 : x - Step 2: Convert to fraction form
725,039.80/1,087,559.70 = 305,135.80/x - Step 3: Cross multiply
725,039.80x = 1,087,559.70 × 305,135.80 - Step 4: Simplify right side
725,039.80x = 331,853,399,107.26 - Step 5: Solve for x
x = 331,853,399,107.26/725,039.80 - Step 6: Final answer
x = 457,703.70
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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.