Finding the Fourth Proportional to 856,635.12, 1,182,138.84 and 474,658.56
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Solution
The fourth proportional to 856,635.12, 1,182,138.84 and 474,658.56 is: 655,019.05
Step by Step Solution
- Step 1: Write the proportion equation
856,635.12 : 1,182,138.84 = 474,658.56 : x - Step 2: Convert to fraction form
856,635.12/1,182,138.84 = 474,658.56/x - Step 3: Cross multiply
856,635.12x = 1,182,138.84 × 474,658.56 - Step 4: Simplify right side
856,635.12x = 561,112,319,514.47 - Step 5: Solve for x
x = 561,112,319,514.47/856,635.12 - Step 6: Final answer
x = 655,019.05
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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.