Finding the Fourth Proportional to 665,626.14, 918,461.42 and 379,109.70
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Solution
The fourth proportional to 665,626.14, 918,461.42 and 379,109.70 is: 523,112.92
Step by Step Solution
- Step 1: Write the proportion equation
665,626.14 : 918,461.42 = 379,109.70 : x - Step 2: Convert to fraction form
665,626.14/918,461.42 = 379,109.70/x - Step 3: Cross multiply
665,626.14x = 918,461.42 × 379,109.70 - Step 4: Simplify right side
665,626.14x = 348,197,633,397.77 - Step 5: Solve for x
x = 348,197,633,397.77/665,626.14 - Step 6: Final answer
x = 523,112.92
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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.