Finding the Fourth Proportional to 718,538.10, 1,078,516.26 and 381,577.79
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Solution
The fourth proportional to 718,538.10, 1,078,516.26 and 381,577.79 is: 572,743.26
Step by Step Solution
- Step 1: Write the proportion equation
718,538.10 : 1,078,516.26 = 381,577.79 : x - Step 2: Convert to fraction form
718,538.10/1,078,516.26 = 381,577.79/x - Step 3: Cross multiply
718,538.10x = 1,078,516.26 × 381,577.79 - Step 4: Simplify right side
718,538.10x = 411,537,850,969.87 - Step 5: Solve for x
x = 411,537,850,969.87/718,538.10 - Step 6: Final answer
x = 572,743.26
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.