Finding the Fourth Proportional to 661,246.14, 911,674.88 and 428,261.42
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Solution
The fourth proportional to 661,246.14, 911,674.88 and 428,261.42 is: 590,453.62
Step by Step Solution
- Step 1: Write the proportion equation
661,246.14 : 911,674.88 = 428,261.42 : x - Step 2: Convert to fraction form
661,246.14/911,674.88 = 428,261.42/x - Step 3: Cross multiply
661,246.14x = 911,674.88 × 428,261.42 - Step 4: Simplify right side
661,246.14x = 390,435,178,687.13 - Step 5: Solve for x
x = 390,435,178,687.13/661,246.14 - Step 6: Final answer
x = 590,453.62
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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.