Finding the Fourth Proportional to 870,985.96, 1,201,960.62 and 489,020.94
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Solution
The fourth proportional to 870,985.96, 1,201,960.62 and 489,020.94 is: 674,848.90
Step by Step Solution
- Step 1: Write the proportion equation
870,985.96 : 1,201,960.62 = 489,020.94 : x - Step 2: Convert to fraction form
870,985.96/1,201,960.62 = 489,020.94/x - Step 3: Cross multiply
870,985.96x = 1,201,960.62 × 489,020.94 - Step 4: Simplify right side
870,985.96x = 587,783,912,235.38 - Step 5: Solve for x
x = 587,783,912,235.38/870,985.96 - Step 6: Final answer
x = 674,848.90
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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.