Finding the Fourth Proportional to 518,676.28, 715,775.52 and 289,232.84
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Solution
The fourth proportional to 518,676.28, 715,775.52 and 289,232.84 is: 399,142.58
Step by Step Solution
- Step 1: Write the proportion equation
518,676.28 : 715,775.52 = 289,232.84 : x - Step 2: Convert to fraction form
518,676.28/715,775.52 = 289,232.84/x - Step 3: Cross multiply
518,676.28x = 715,775.52 × 289,232.84 - Step 4: Simplify right side
518,676.28x = 207,025,786,452.08 - Step 5: Solve for x
x = 207,025,786,452.08/518,676.28 - Step 6: Final answer
x = 399,142.58
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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.