Finding the Fourth Proportional to 5,172,502.55, 7,138,274.94 and 2,880,663.26
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Solution
The fourth proportional to 5,172,502.55, 7,138,274.94 and 2,880,663.26 is: 3,975,438.61
Step by Step Solution
- Step 1: Write the proportion equation
5,172,502.55 : 7,138,274.94 = 2,880,663.26 : x - Step 2: Convert to fraction form
5,172,502.55/7,138,274.94 = 2,880,663.26/x - Step 3: Cross multiply
5,172,502.55x = 7,138,274.94 × 2,880,663.26 - Step 4: Simplify right side
5,172,502.55x = 20,562,966,323,745.33 - Step 5: Solve for x
x = 20,562,966,323,745.33/5,172,502.55 - Step 6: Final answer
x = 3,975,438.61
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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.