Finding the Fourth Proportional to 489,805.70, 684,328.30 and 489,805.70
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Solution
The fourth proportional to 489,805.70, 684,328.30 and 489,805.70 is: 684,328.30
Step by Step Solution
- Step 1: Write the proportion equation
489,805.70 : 684,328.30 = 489,805.70 : x - Step 2: Convert to fraction form
489,805.70/684,328.30 = 489,805.70/x - Step 3: Cross multiply
489,805.70x = 684,328.30 × 489,805.70 - Step 4: Simplify right side
489,805.70x = 335,187,902,011.31 - Step 5: Solve for x
x = 335,187,902,011.31/489,805.70 - Step 6: Final answer
x = 684,328.30
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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.