Finding the Fourth Proportional to 728,629.98, 1,005,507.39 and 406,340.42
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Solution
The fourth proportional to 728,629.98, 1,005,507.39 and 406,340.42 is: 560,748.67
Step by Step Solution
- Step 1: Write the proportion equation
728,629.98 : 1,005,507.39 = 406,340.42 : x - Step 2: Convert to fraction form
728,629.98/1,005,507.39 = 406,340.42/x - Step 3: Cross multiply
728,629.98x = 1,005,507.39 × 406,340.42 - Step 4: Simplify right side
728,629.98x = 408,578,295,165.70 - Step 5: Solve for x
x = 408,578,295,165.70/728,629.98 - Step 6: Final answer
x = 560,748.67
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1.5x scale
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.