Finding the Fourth Proportional to 5,118,578.40, 7,680,517.20 and 2,088,165.60
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Solution
The fourth proportional to 5,118,578.40, 7,680,517.20 and 2,088,165.60 is: 3,133,329.33
Step by Step Solution
- Step 1: Write the proportion equation
5,118,578.40 : 7,680,517.20 = 2,088,165.60 : x - Step 2: Convert to fraction form
5,118,578.40/7,680,517.20 = 2,088,165.60/x - Step 3: Cross multiply
5,118,578.40x = 7,680,517.20 × 2,088,165.60 - Step 4: Simplify right side
5,118,578.40x = 16,038,191,807,248.32 - Step 5: Solve for x
x = 16,038,191,807,248.32/5,118,578.40 - Step 6: Final answer
x = 3,133,329.33
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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.