Finding the Fourth Proportional to 2,128,476.72, 2,937,359.44 and 1,161,668.64
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Solution
The fourth proportional to 2,128,476.72, 2,937,359.44 and 1,161,668.64 is: 1,603,136.32
Step by Step Solution
- Step 1: Write the proportion equation
2,128,476.72 : 2,937,359.44 = 1,161,668.64 : x - Step 2: Convert to fraction form
2,128,476.72/2,937,359.44 = 1,161,668.64/x - Step 3: Cross multiply
2,128,476.72x = 2,937,359.44 × 1,161,668.64 - Step 4: Simplify right side
2,128,476.72x = 3,412,238,345,855.96 - Step 5: Solve for x
x = 3,412,238,345,855.96/2,128,476.72 - Step 6: Final answer
x = 1,603,136.32
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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.