Finding the Fourth Proportional to 1,040,197.80, 1,560,296.70 and 408,901.80
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Solution
The fourth proportional to 1,040,197.80, 1,560,296.70 and 408,901.80 is: 613,352.70
Step by Step Solution
- Step 1: Write the proportion equation
1,040,197.80 : 1,560,296.70 = 408,901.80 : x - Step 2: Convert to fraction form
1,040,197.80/1,560,296.70 = 408,901.80/x - Step 3: Cross multiply
1,040,197.80x = 1,560,296.70 × 408,901.80 - Step 4: Simplify right side
1,040,197.80x = 638,008,129,164.06 - Step 5: Solve for x
x = 638,008,129,164.06/1,040,197.80 - Step 6: Final answer
x = 613,352.70
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Double scale
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Similar ratio
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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.