Finding the Fourth Proportional to 728,765.08, 1,005,697.19 and 406,496.05
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Solution
The fourth proportional to 728,765.08, 1,005,697.19 and 406,496.05 is: 560,965.32
Step by Step Solution
- Step 1: Write the proportion equation
728,765.08 : 1,005,697.19 = 406,496.05 : x - Step 2: Convert to fraction form
728,765.08/1,005,697.19 = 406,496.05/x - Step 3: Cross multiply
728,765.08x = 1,005,697.19 × 406,496.05 - Step 4: Simplify right side
728,765.08x = 408,811,935,231.10 - Step 5: Solve for x
x = 408,811,935,231.10/728,765.08 - Step 6: Final answer
x = 560,965.32
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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.