Finding the Fourth Proportional to 816,580.12, 1,126,943.70 and 489,905.44
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Solution
The fourth proportional to 816,580.12, 1,126,943.70 and 489,905.44 is: 676,107.38
Step by Step Solution
- Step 1: Write the proportion equation
816,580.12 : 1,126,943.70 = 489,905.44 : x - Step 2: Convert to fraction form
816,580.12/1,126,943.70 = 489,905.44/x - Step 3: Cross multiply
816,580.12x = 1,126,943.70 × 489,905.44 - Step 4: Simplify right side
816,580.12x = 552,095,849,203.73 - Step 5: Solve for x
x = 552,095,849,203.73/816,580.12 - Step 6: Final answer
x = 676,107.38
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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.