Finding the Fourth Proportional to 578,939.46, 798,961.92 and 320,815.68
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Solution
The fourth proportional to 578,939.46, 798,961.92 and 320,815.68 is: 442,739.75
Step by Step Solution
- Step 1: Write the proportion equation
578,939.46 : 798,961.92 = 320,815.68 : x - Step 2: Convert to fraction form
578,939.46/798,961.92 = 320,815.68/x - Step 3: Cross multiply
578,939.46x = 798,961.92 × 320,815.68 - Step 4: Simplify right side
578,939.46x = 256,319,511,658.91 - Step 5: Solve for x
x = 256,319,511,658.91/578,939.46 - Step 6: Final answer
x = 442,739.75
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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.