Finding the Fourth Proportional to 1,485,276.81, 2,228,102.79 and 420,319.21
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Solution
The fourth proportional to 1,485,276.81, 2,228,102.79 and 420,319.21 is: 630,531.90
Step by Step Solution
- Step 1: Write the proportion equation
1,485,276.81 : 2,228,102.79 = 420,319.21 : x - Step 2: Convert to fraction form
1,485,276.81/2,228,102.79 = 420,319.21/x - Step 3: Cross multiply
1,485,276.81x = 2,228,102.79 × 420,319.21 - Step 4: Simplify right side
1,485,276.81x = 936,514,404,491.60 - Step 5: Solve for x
x = 936,514,404,491.60/1,485,276.81 - Step 6: Final answer
x = 630,531.90
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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.