Finding the Fourth Proportional to 493,980.44, 681,684.12 and 279,115.92
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Solution
The fourth proportional to 493,980.44, 681,684.12 and 279,115.92 is: 385,174.95
Step by Step Solution
- Step 1: Write the proportion equation
493,980.44 : 681,684.12 = 279,115.92 : x - Step 2: Convert to fraction form
493,980.44/681,684.12 = 279,115.92/x - Step 3: Cross multiply
493,980.44x = 681,684.12 × 279,115.92 - Step 4: Simplify right side
493,980.44x = 190,268,890,303.19 - Step 5: Solve for x
x = 190,268,890,303.19/493,980.44 - Step 6: Final answer
x = 385,174.95
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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.