Finding the Fourth Proportional to 857,201.10, 1,286,348.40 and 408,428.70
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Solution
The fourth proportional to 857,201.10, 1,286,348.40 and 408,428.70 is: 612,903.56
Step by Step Solution
- Step 1: Write the proportion equation
857,201.10 : 1,286,348.40 = 408,428.70 : x - Step 2: Convert to fraction form
857,201.10/1,286,348.40 = 408,428.70/x - Step 3: Cross multiply
857,201.10x = 1,286,348.40 × 408,428.70 - Step 4: Simplify right side
857,201.10x = 525,381,604,759.08 - Step 5: Solve for x
x = 525,381,604,759.08/857,201.10 - Step 6: Final answer
x = 612,903.56
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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.