Finding the Fourth Proportional to 665,778.88, 918,708.84 and 379,281.88
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Solution
The fourth proportional to 665,778.88, 918,708.84 and 379,281.88 is: 523,371.39
Step by Step Solution
- Step 1: Write the proportion equation
665,778.88 : 918,708.84 = 379,281.88 : x - Step 2: Convert to fraction form
665,778.88/918,708.84 = 379,281.88/x - Step 3: Cross multiply
665,778.88x = 918,708.84 × 379,281.88 - Step 4: Simplify right side
665,778.88x = 348,449,616,007.82 - Step 5: Solve for x
x = 348,449,616,007.82/665,778.88 - Step 6: Final answer
x = 523,371.39
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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.