Finding the Fourth Proportional to 5,172,497.76, 7,138,268.40 and 2,880,658.48
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Solution
The fourth proportional to 5,172,497.76, 7,138,268.40 and 2,880,658.48 is: 3,975,432.05
Step by Step Solution
- Step 1: Write the proportion equation
5,172,497.76 : 7,138,268.40 = 2,880,658.48 : x - Step 2: Convert to fraction form
5,172,497.76/7,138,268.40 = 2,880,658.48/x - Step 3: Cross multiply
5,172,497.76x = 7,138,268.40 × 2,880,658.48 - Step 4: Simplify right side
5,172,497.76x = 20,562,913,398,976.03 - Step 5: Solve for x
x = 20,562,913,398,976.03/5,172,497.76 - Step 6: Final answer
x = 3,975,432.05
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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.