Finding the Fourth Proportional to 678,493.75, 1,018,207.19 and 235,261.75
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Solution
The fourth proportional to 678,493.75, 1,018,207.19 and 235,261.75 is: 353,054.40
Step by Step Solution
- Step 1: Write the proportion equation
678,493.75 : 1,018,207.19 = 235,261.75 : x - Step 2: Convert to fraction form
678,493.75/1,018,207.19 = 235,261.75/x - Step 3: Cross multiply
678,493.75x = 1,018,207.19 × 235,261.75 - Step 4: Simplify right side
678,493.75x = 239,545,205,381.98 - Step 5: Solve for x
x = 239,545,205,381.98/678,493.75 - Step 6: Final answer
x = 353,054.40
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.