Finding the Fourth Proportional to 12,618,477.90, 18,920,135.94 and 4,932,968.97
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Solution
The fourth proportional to 12,618,477.90, 18,920,135.94 and 4,932,968.97 is: 7,396,489.83
Step by Step Solution
- Step 1: Write the proportion equation
12,618,477.90 : 18,920,135.94 = 4,932,968.97 : x - Step 2: Convert to fraction form
12,618,477.90/18,920,135.94 = 4,932,968.97/x - Step 3: Cross multiply
12,618,477.90x = 18,920,135.94 × 4,932,968.97 - Step 4: Simplify right side
12,618,477.90x = 93,332,443,500,201.78 - Step 5: Solve for x
x = 93,332,443,500,201.78/12,618,477.90 - Step 6: Final answer
x = 7,396,489.83
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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.