Finding the Fourth Proportional to 819,871.63, 1,229,772.11 and 280,176.12
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Solution
The fourth proportional to 819,871.63, 1,229,772.11 and 280,176.12 is: 420,252.10
Step by Step Solution
- Step 1: Write the proportion equation
819,871.63 : 1,229,772.11 = 280,176.12 : x - Step 2: Convert to fraction form
819,871.63/1,229,772.11 = 280,176.12/x - Step 3: Cross multiply
819,871.63x = 1,229,772.11 × 280,176.12 - Step 4: Simplify right side
819,871.63x = 344,552,776,863.13 - Step 5: Solve for x
x = 344,552,776,863.13/819,871.63 - Step 6: Final answer
x = 420,252.10
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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.