Finding the Fourth Proportional to 644,785.29, 889,797.29 and 358,299.36
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Solution
The fourth proportional to 644,785.29, 889,797.29 and 358,299.36 is: 494,449.55
Step by Step Solution
- Step 1: Write the proportion equation
644,785.29 : 889,797.29 = 358,299.36 : x - Step 2: Convert to fraction form
644,785.29/889,797.29 = 358,299.36/x - Step 3: Cross multiply
644,785.29x = 889,797.29 × 358,299.36 - Step 4: Simplify right side
644,785.29x = 318,813,797,745.24 - Step 5: Solve for x
x = 318,813,797,745.24/644,785.29 - Step 6: Final answer
x = 494,449.55
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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.