Finding the Fourth Proportional to 691,243.80, 1,036,865.70 and 192,607.80
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Solution
The fourth proportional to 691,243.80, 1,036,865.70 and 192,607.80 is: 288,911.70
Step by Step Solution
- Step 1: Write the proportion equation
691,243.80 : 1,036,865.70 = 192,607.80 : x - Step 2: Convert to fraction form
691,243.80/1,036,865.70 = 192,607.80/x - Step 3: Cross multiply
691,243.80x = 1,036,865.70 × 192,607.80 - Step 4: Simplify right side
691,243.80x = 199,708,421,372.46 - Step 5: Solve for x
x = 199,708,421,372.46/691,243.80 - Step 6: Final answer
x = 288,911.70
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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.