Finding the Fourth Proportional to 644,471.28, 889,369.92 and 358,018.02
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Solution
The fourth proportional to 644,471.28, 889,369.92 and 358,018.02 is: 494,064.62
Step by Step Solution
- Step 1: Write the proportion equation
644,471.28 : 889,369.92 = 358,018.02 : x - Step 2: Convert to fraction form
644,471.28/889,369.92 = 358,018.02/x - Step 3: Cross multiply
644,471.28x = 889,369.92 × 358,018.02 - Step 4: Simplify right side
644,471.28x = 318,410,457,805.96 - Step 5: Solve for x
x = 318,410,457,805.96/644,471.28 - Step 6: Final answer
x = 494,064.62
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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.