Finding the Fourth Proportional to 489,979.10, 676,329.68 and 317,592.88
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Solution
The fourth proportional to 489,979.10, 676,329.68 and 317,592.88 is: 438,380.92
Step by Step Solution
- Step 1: Write the proportion equation
489,979.10 : 676,329.68 = 317,592.88 : x - Step 2: Convert to fraction form
489,979.10/676,329.68 = 317,592.88/x - Step 3: Cross multiply
489,979.10x = 676,329.68 × 317,592.88 - Step 4: Simplify right side
489,979.10x = 214,797,490,900.68 - Step 5: Solve for x
x = 214,797,490,900.68/489,979.10 - Step 6: Final answer
x = 438,380.92
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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.