Finding the Fourth Proportional to 490,636.64, 677,141.16 and 299,609.84
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Solution
The fourth proportional to 490,636.64, 677,141.16 and 299,609.84 is: 413,499.80
Step by Step Solution
- Step 1: Write the proportion equation
490,636.64 : 677,141.16 = 299,609.84 : x - Step 2: Convert to fraction form
490,636.64/677,141.16 = 299,609.84/x - Step 3: Cross multiply
490,636.64x = 677,141.16 × 299,609.84 - Step 4: Simplify right side
490,636.64x = 202,878,154,605.01 - Step 5: Solve for x
x = 202,878,154,605.01/490,636.64 - Step 6: Final answer
x = 413,499.80
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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.