Finding the Fourth Proportional to 5,478,743.80, 8,218,115.70 and 2,486,927.80
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Solution
The fourth proportional to 5,478,743.80, 8,218,115.70 and 2,486,927.80 is: 3,730,391.70
Step by Step Solution
- Step 1: Write the proportion equation
5,478,743.80 : 8,218,115.70 = 2,486,927.80 : x - Step 2: Convert to fraction form
5,478,743.80/8,218,115.70 = 2,486,927.80/x - Step 3: Cross multiply
5,478,743.80x = 8,218,115.70 × 2,486,927.80 - Step 4: Simplify right side
5,478,743.80x = 20,437,860,397,946.46 - Step 5: Solve for x
x = 20,437,860,397,946.46/5,478,743.80 - Step 6: Final answer
x = 3,730,391.70
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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.