Finding the Fourth Proportional to 1,245,689.78, 1,719,051.92 and 672,729.99
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Solution
The fourth proportional to 1,245,689.78, 1,719,051.92 and 672,729.99 is: 928,367.40
Step by Step Solution
- Step 1: Write the proportion equation
1,245,689.78 : 1,719,051.92 = 672,729.99 : x - Step 2: Convert to fraction form
1,245,689.78/1,719,051.92 = 672,729.99/x - Step 3: Cross multiply
1,245,689.78x = 1,719,051.92 × 672,729.99 - Step 4: Simplify right side
1,245,689.78x = 1,156,457,777,587.43 - Step 5: Solve for x
x = 1,156,457,777,587.43/1,245,689.78 - Step 6: Final answer
x = 928,367.40
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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.