Finding the Fourth Proportional to 476,678.64, 657,821.88 and 261,823.68
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Solution
The fourth proportional to 476,678.64, 657,821.88 and 261,823.68 is: 361,319.62
Step by Step Solution
- Step 1: Write the proportion equation
476,678.64 : 657,821.88 = 261,823.68 : x - Step 2: Convert to fraction form
476,678.64/657,821.88 = 261,823.68/x - Step 3: Cross multiply
476,678.64x = 657,821.88 × 261,823.68 - Step 4: Simplify right side
476,678.64x = 172,233,345,406.12 - Step 5: Solve for x
x = 172,233,345,406.12/476,678.64 - Step 6: Final answer
x = 361,319.62
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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.