Finding the Fourth Proportional to 1,438,988.90, 2,158,107.30 and 427,838.56
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Solution
The fourth proportional to 1,438,988.90, 2,158,107.30 and 427,838.56 is: 641,646.03
Step by Step Solution
- Step 1: Write the proportion equation
1,438,988.90 : 2,158,107.30 = 427,838.56 : x - Step 2: Convert to fraction form
1,438,988.90/2,158,107.30 = 427,838.56/x - Step 3: Cross multiply
1,438,988.90x = 2,158,107.30 × 427,838.56 - Step 4: Simplify right side
1,438,988.90x = 923,321,514,162.22 - Step 5: Solve for x
x = 923,321,514,162.22/1,438,988.90 - Step 6: Final answer
x = 641,646.03
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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.