Finding the Fourth Proportional to 990,423.60, 1,481,698.80 and 858,766.20
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Solution
The fourth proportional to 990,423.60, 1,481,698.80 and 858,766.20 is: 1,284,735.99
Step by Step Solution
- Step 1: Write the proportion equation
990,423.60 : 1,481,698.80 = 858,766.20 : x - Step 2: Convert to fraction form
990,423.60/1,481,698.80 = 858,766.20/x - Step 3: Cross multiply
990,423.60x = 1,481,698.80 × 858,766.20 - Step 4: Simplify right side
990,423.60x = 1,272,432,848,020.56 - Step 5: Solve for x
x = 1,272,432,848,020.56/990,423.60 - Step 6: Final answer
x = 1,284,735.99
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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.