Finding the Fourth Proportional to 489,806.70, 684,329.70 and 489,806.70
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Solution
The fourth proportional to 489,806.70, 684,329.70 and 489,806.70 is: 684,329.70
Step by Step Solution
- Step 1: Write the proportion equation
489,806.70 : 684,329.70 = 489,806.70 : x - Step 2: Convert to fraction form
489,806.70/684,329.70 = 489,806.70/x - Step 3: Cross multiply
489,806.70x = 684,329.70 × 489,806.70 - Step 4: Simplify right side
489,806.70x = 335,189,272,068.99 - Step 5: Solve for x
x = 335,189,272,068.99/489,806.70 - Step 6: Final answer
x = 684,329.70
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Why These Related Problems?
These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.