Finding the Fourth Proportional to 501,863.28, 691,615.44 and 492,639.84
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Solution
The fourth proportional to 501,863.28, 691,615.44 and 492,639.84 is: 678,904.66
Step by Step Solution
- Step 1: Write the proportion equation
501,863.28 : 691,615.44 = 492,639.84 : x - Step 2: Convert to fraction form
501,863.28/691,615.44 = 492,639.84/x - Step 3: Cross multiply
501,863.28x = 691,615.44 × 492,639.84 - Step 4: Simplify right side
501,863.28x = 340,717,319,703.13 - Step 5: Solve for x
x = 340,717,319,703.13/501,863.28 - Step 6: Final answer
x = 678,904.66
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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.