Finding the Fourth Proportional to 782,049.84, 1,079,228.92 and 442,511.28
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Solution
The fourth proportional to 782,049.84, 1,079,228.92 and 442,511.28 is: 610,665.65
Step by Step Solution
- Step 1: Write the proportion equation
782,049.84 : 1,079,228.92 = 442,511.28 : x - Step 2: Convert to fraction form
782,049.84/1,079,228.92 = 442,511.28/x - Step 3: Cross multiply
782,049.84x = 1,079,228.92 × 442,511.28 - Step 4: Simplify right side
782,049.84x = 477,570,970,802.22 - Step 5: Solve for x
x = 477,570,970,802.22/782,049.84 - Step 6: Final answer
x = 610,665.65
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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.