Finding the Fourth Proportional to 5,163,728.78, 7,126,198.08 and 2,871,840.26
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Solution
The fourth proportional to 5,163,728.78, 7,126,198.08 and 2,871,840.26 is: 3,963,279.91
Step by Step Solution
- Step 1: Write the proportion equation
5,163,728.78 : 7,126,198.08 = 2,871,840.26 : x - Step 2: Convert to fraction form
5,163,728.78/7,126,198.08 = 2,871,840.26/x - Step 3: Cross multiply
5,163,728.78x = 7,126,198.08 × 2,871,840.26 - Step 4: Simplify right side
5,163,728.78x = 20,465,302,546,878.70 - Step 5: Solve for x
x = 20,465,302,546,878.70/5,163,728.78 - Step 6: Final answer
x = 3,963,279.91
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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.