Finding the Fourth Proportional to 1,386,958.78, 2,080,665.87 and 427,414.55
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Solution
The fourth proportional to 1,386,958.78, 2,080,665.87 and 427,414.55 is: 641,191.99
Step by Step Solution
- Step 1: Write the proportion equation
1,386,958.78 : 2,080,665.87 = 427,414.55 : x - Step 2: Convert to fraction form
1,386,958.78/2,080,665.87 = 427,414.55/x - Step 3: Cross multiply
1,386,958.78x = 2,080,665.87 × 427,414.55 - Step 4: Simplify right side
1,386,958.78x = 889,306,853,986.01 - Step 5: Solve for x
x = 889,306,853,986.01/1,386,958.78 - Step 6: Final answer
x = 641,191.99
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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.