Finding the Fourth Proportional to 8,857,403.40, 13,286,105.10 and 3,178,201.80
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Solution
The fourth proportional to 8,857,403.40, 13,286,105.10 and 3,178,201.80 is: 4,767,302.70
Step by Step Solution
- Step 1: Write the proportion equation
8,857,403.40 : 13,286,105.10 = 3,178,201.80 : x - Step 2: Convert to fraction form
8,857,403.40/13,286,105.10 = 3,178,201.80/x - Step 3: Cross multiply
8,857,403.40x = 13,286,105.10 × 3,178,201.80 - Step 4: Simplify right side
8,857,403.40x = 42,225,923,143,809.18 - Step 5: Solve for x
x = 42,225,923,143,809.18/8,857,403.40 - Step 6: Final answer
x = 4,767,302.70
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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.