Finding the Fourth Proportional to 1,663,504.80, 2,491,570.80 and 1,288,311.20
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Solution
The fourth proportional to 1,663,504.80, 2,491,570.80 and 1,288,311.20 is: 1,929,611.85
Step by Step Solution
- Step 1: Write the proportion equation
1,663,504.80 : 2,491,570.80 = 1,288,311.20 : x - Step 2: Convert to fraction form
1,663,504.80/2,491,570.80 = 1,288,311.20/x - Step 3: Cross multiply
1,663,504.80x = 2,491,570.80 × 1,288,311.20 - Step 4: Simplify right side
1,663,504.80x = 3,209,918,567,232.96 - Step 5: Solve for x
x = 3,209,918,567,232.96/1,663,504.80 - Step 6: Final answer
x = 1,929,611.85
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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.