Finding the Fourth Proportional to 2,128,431.72, 2,936,466.06 and 1,638,551
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Solution
The fourth proportional to 2,128,431.72, 2,936,466.06 and 1,638,551 is: 2,260,607.82
Step by Step Solution
- Step 1: Write the proportion equation
2,128,431.72 : 2,936,466.06 = 1,638,551 : x - Step 2: Convert to fraction form
2,128,431.72/2,936,466.06 = 1,638,551/x - Step 3: Cross multiply
2,128,431.72x = 2,936,466.06 × 1,638,551 - Step 4: Simplify right side
2,128,431.72x = 4,811,549,399,079.06 - Step 5: Solve for x
x = 4,811,549,399,079.06/2,128,431.72 - Step 6: Final answer
x = 2,260,607.82
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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.