Finding the Fourth Proportional to 665,918.76, 918,743.02 and 379,235.87
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Solution
The fourth proportional to 665,918.76, 918,743.02 and 379,235.87 is: 523,217.43
Step by Step Solution
- Step 1: Write the proportion equation
665,918.76 : 918,743.02 = 379,235.87 : x - Step 2: Convert to fraction form
665,918.76/918,743.02 = 379,235.87/x - Step 3: Cross multiply
665,918.76x = 918,743.02 × 379,235.87 - Step 4: Simplify right side
665,918.76x = 348,420,302,006.23 - Step 5: Solve for x
x = 348,420,302,006.23/665,918.76 - Step 6: Final answer
x = 523,217.43
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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.