Finding the Fourth Proportional to 7,413,821.28, 11,121,647.88 and 2,620,522.08
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Solution
The fourth proportional to 7,413,821.28, 11,121,647.88 and 2,620,522.08 is: 3,931,106.88
Step by Step Solution
- Step 1: Write the proportion equation
7,413,821.28 : 11,121,647.88 = 2,620,522.08 : x - Step 2: Convert to fraction form
7,413,821.28/11,121,647.88 = 2,620,522.08/x - Step 3: Cross multiply
7,413,821.28x = 11,121,647.88 × 2,620,522.08 - Step 4: Simplify right side
7,413,821.28x = 29,144,523,835,525.20 - Step 5: Solve for x
x = 29,144,523,835,525.20/7,413,821.28 - Step 6: Final answer
x = 3,931,106.88
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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.