Finding the Fourth Proportional to 911,992.14, 1,368,135.21 and 280,905.66
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Solution
The fourth proportional to 911,992.14, 1,368,135.21 and 280,905.66 is: 421,403.77
Step by Step Solution
- Step 1: Write the proportion equation
911,992.14 : 1,368,135.21 = 280,905.66 : x - Step 2: Convert to fraction form
911,992.14/1,368,135.21 = 280,905.66/x - Step 3: Cross multiply
911,992.14x = 1,368,135.21 × 280,905.66 - Step 4: Simplify right side
911,992.14x = 384,316,924,134.29 - Step 5: Solve for x
x = 384,316,924,134.29/911,992.14 - Step 6: Final answer
x = 421,403.77
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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.