Finding the Fourth Proportional to 1,040,304.70, 1,560,845.85 and 409,658.14
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Solution
The fourth proportional to 1,040,304.70, 1,560,845.85 and 409,658.14 is: 614,640.31
Step by Step Solution
- Step 1: Write the proportion equation
1,040,304.70 : 1,560,845.85 = 409,658.14 : x - Step 2: Convert to fraction form
1,040,304.70/1,560,845.85 = 409,658.14/x - Step 3: Cross multiply
1,040,304.70x = 1,560,845.85 × 409,658.14 - Step 4: Simplify right side
1,040,304.70x = 639,413,207,737.72 - Step 5: Solve for x
x = 639,413,207,737.72/1,040,304.70 - Step 6: Final answer
x = 614,640.31
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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.