Finding the Fourth Proportional to 665,622.70, 998,434.05 and 413,680.30
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Solution
The fourth proportional to 665,622.70, 998,434.05 and 413,680.30 is: 620,520.45
Step by Step Solution
- Step 1: Write the proportion equation
665,622.70 : 998,434.05 = 413,680.30 : x - Step 2: Convert to fraction form
665,622.70/998,434.05 = 413,680.30/x - Step 3: Cross multiply
665,622.70x = 998,434.05 × 413,680.30 - Step 4: Simplify right side
665,622.70x = 413,032,497,334.22 - Step 5: Solve for x
x = 413,032,497,334.22/665,622.70 - Step 6: Final answer
x = 620,520.45
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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.