Finding the Fourth Proportional to 665,616.70, 998,425.05 and 413,674.30
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Solution
The fourth proportional to 665,616.70, 998,425.05 and 413,674.30 is: 620,511.45
Step by Step Solution
- Step 1: Write the proportion equation
665,616.70 : 998,425.05 = 413,674.30 : x - Step 2: Convert to fraction form
665,616.70/998,425.05 = 413,674.30/x - Step 3: Cross multiply
665,616.70x = 998,425.05 × 413,674.30 - Step 4: Simplify right side
665,616.70x = 413,022,783,661.22 - Step 5: Solve for x
x = 413,022,783,661.22/665,616.70 - Step 6: Final answer
x = 620,511.45
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Similar ratio
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1.5x scale
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.