Finding the Fourth Proportional to 461,203.20, 691,804.80 and 398,995.20
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Solution
The fourth proportional to 461,203.20, 691,804.80 and 398,995.20 is: 598,492.80
Step by Step Solution
- Step 1: Write the proportion equation
461,203.20 : 691,804.80 = 398,995.20 : x - Step 2: Convert to fraction form
461,203.20/691,804.80 = 398,995.20/x - Step 3: Cross multiply
461,203.20x = 691,804.80 × 398,995.20 - Step 4: Simplify right side
461,203.20x = 276,026,794,536.96 - Step 5: Solve for x
x = 276,026,794,536.96/461,203.20 - Step 6: Final answer
x = 598,492.80
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1.5x scale
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.