Finding the Fourth Proportional to 431,479.80, 647,219.70 and 352,747.80
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Solution
The fourth proportional to 431,479.80, 647,219.70 and 352,747.80 is: 529,121.70
Step by Step Solution
- Step 1: Write the proportion equation
431,479.80 : 647,219.70 = 352,747.80 : x - Step 2: Convert to fraction form
431,479.80/647,219.70 = 352,747.80/x - Step 3: Cross multiply
431,479.80x = 647,219.70 × 352,747.80 - Step 4: Simplify right side
431,479.80x = 228,305,325,291.66 - Step 5: Solve for x
x = 228,305,325,291.66/431,479.80 - Step 6: Final answer
x = 529,121.70
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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.