Finding the Fourth Proportional to 489,465.36, 675,310.68 and 285,371.82
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Solution
The fourth proportional to 489,465.36, 675,310.68 and 285,371.82 is: 393,724.77
Step by Step Solution
- Step 1: Write the proportion equation
489,465.36 : 675,310.68 = 285,371.82 : x - Step 2: Convert to fraction form
489,465.36/675,310.68 = 285,371.82/x - Step 3: Cross multiply
489,465.36x = 675,310.68 × 285,371.82 - Step 4: Simplify right side
489,465.36x = 192,714,637,817.04 - Step 5: Solve for x
x = 192,714,637,817.04/489,465.36 - Step 6: Final answer
x = 393,724.77
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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.