Finding the Fourth Proportional to 644,197.72, 888,995.64 and 357,716.92
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Solution
The fourth proportional to 644,197.72, 888,995.64 and 357,716.92 is: 493,650.90
Step by Step Solution
- Step 1: Write the proportion equation
644,197.72 : 888,995.64 = 357,716.92 : x - Step 2: Convert to fraction form
644,197.72/888,995.64 = 357,716.92/x - Step 3: Cross multiply
644,197.72x = 888,995.64 × 357,716.92 - Step 4: Simplify right side
644,197.72x = 318,008,782,234.23 - Step 5: Solve for x
x = 318,008,782,234.23/644,197.72 - Step 6: Final answer
x = 493,650.90
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.