Finding the Fourth Proportional to 491,085.28, 677,690.76 and 276,225.28
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Solution
The fourth proportional to 491,085.28, 677,690.76 and 276,225.28 is: 381,186.99
Step by Step Solution
- Step 1: Write the proportion equation
491,085.28 : 677,690.76 = 276,225.28 : x - Step 2: Convert to fraction form
491,085.28/677,690.76 = 276,225.28/x - Step 3: Cross multiply
491,085.28x = 677,690.76 × 276,225.28 - Step 4: Simplify right side
491,085.28x = 187,195,319,934.41 - Step 5: Solve for x
x = 187,195,319,934.41/491,085.28 - Step 6: Final answer
x = 381,186.99
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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.