Finding the Fourth Proportional to 491,243.50, 677,909.08 and 276,383.05
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Solution
The fourth proportional to 491,243.50, 677,909.08 and 276,383.05 is: 381,404.70
Step by Step Solution
- Step 1: Write the proportion equation
491,243.50 : 677,909.08 = 276,383.05 : x - Step 2: Convert to fraction form
491,243.50/677,909.08 = 276,383.05/x - Step 3: Cross multiply
491,243.50x = 677,909.08 × 276,383.05 - Step 4: Simplify right side
491,243.50x = 187,362,577,458.32 - Step 5: Solve for x
x = 187,362,577,458.32/491,243.50 - Step 6: Final answer
x = 381,404.70
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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.