Finding the Fourth Proportional to 989,821.76, 1,365,957.68 and 537,112.76
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Solution
The fourth proportional to 989,821.76, 1,365,957.68 and 537,112.76 is: 741,217.59
Step by Step Solution
- Step 1: Write the proportion equation
989,821.76 : 1,365,957.68 = 537,112.76 : x - Step 2: Convert to fraction form
989,821.76/1,365,957.68 = 537,112.76/x - Step 3: Cross multiply
989,821.76x = 1,365,957.68 × 537,112.76 - Step 4: Simplify right side
989,821.76x = 733,673,299,548.00 - Step 5: Solve for x
x = 733,673,299,548.00/989,821.76 - Step 6: Final answer
x = 741,217.59
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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.