Finding the Fourth Proportional to 858,770.21, 1,286,193.40 and 409,806.45
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Solution
The fourth proportional to 858,770.21, 1,286,193.40 and 409,806.45 is: 613,773.45
Step by Step Solution
- Step 1: Write the proportion equation
858,770.21 : 1,286,193.40 = 409,806.45 : x - Step 2: Convert to fraction form
858,770.21/1,286,193.40 = 409,806.45/x - Step 3: Cross multiply
858,770.21x = 1,286,193.40 × 409,806.45 - Step 4: Simplify right side
858,770.21x = 527,090,351,267.43 - Step 5: Solve for x
x = 527,090,351,267.43/858,770.21 - Step 6: Final answer
x = 613,773.45
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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.