Finding the Fourth Proportional to 739,987.74, 1,021,186.10 and 400,455.99
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Solution
The fourth proportional to 739,987.74, 1,021,186.10 and 400,455.99 is: 552,630.90
Step by Step Solution
- Step 1: Write the proportion equation
739,987.74 : 1,021,186.10 = 400,455.99 : x - Step 2: Convert to fraction form
739,987.74/1,021,186.10 = 400,455.99/x - Step 3: Cross multiply
739,987.74x = 1,021,186.10 × 400,455.99 - Step 4: Simplify right side
739,987.74x = 408,940,090,649.74 - Step 5: Solve for x
x = 408,940,090,649.74/739,987.74 - Step 6: Final answer
x = 552,630.90
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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.