Finding the Fourth Proportional to 724,640.72, 1,079,615.14 and 688,949.84
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Solution
The fourth proportional to 724,640.72, 1,079,615.14 and 688,949.84 is: 1,026,440.63
Step by Step Solution
- Step 1: Write the proportion equation
724,640.72 : 1,079,615.14 = 688,949.84 : x - Step 2: Convert to fraction form
724,640.72/1,079,615.14 = 688,949.84/x - Step 3: Cross multiply
724,640.72x = 1,079,615.14 × 688,949.84 - Step 4: Simplify right side
724,640.72x = 743,800,677,964.58 - Step 5: Solve for x
x = 743,800,677,964.58/724,640.72 - Step 6: Final answer
x = 1,026,440.63
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Why These Related Problems?
These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.