Finding the Fourth Proportional to 815,855.19, 1,223,777.66 and 317,219.19
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Solution
The fourth proportional to 815,855.19, 1,223,777.66 and 317,219.19 is: 475,826.79
Step by Step Solution
- Step 1: Write the proportion equation
815,855.19 : 1,223,777.66 = 317,219.19 : x - Step 2: Convert to fraction form
815,855.19/1,223,777.66 = 317,219.19/x - Step 3: Cross multiply
815,855.19x = 1,223,777.66 × 317,219.19 - Step 4: Simplify right side
815,855.19x = 388,205,756,459.20 - Step 5: Solve for x
x = 388,205,756,459.20/815,855.19 - Step 6: Final answer
x = 475,826.79
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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.