Finding the Fourth Proportional to 1,538,919.24, 2,122,606.92 and 1,080,136.14
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Solution
The fourth proportional to 1,538,919.24, 2,122,606.92 and 1,080,136.14 is: 1,489,814.66
Step by Step Solution
- Step 1: Write the proportion equation
1,538,919.24 : 2,122,606.92 = 1,080,136.14 : x - Step 2: Convert to fraction form
1,538,919.24/2,122,606.92 = 1,080,136.14/x - Step 3: Cross multiply
1,538,919.24x = 2,122,606.92 × 1,080,136.14 - Step 4: Simplify right side
1,538,919.24x = 2,292,704,445,306.09 - Step 5: Solve for x
x = 2,292,704,445,306.09/1,538,919.24 - Step 6: Final answer
x = 1,489,814.66
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.