Finding the Fourth Proportional to 812,067.84, 1,120,655.76 and 449,516.70
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Solution
The fourth proportional to 812,067.84, 1,120,655.76 and 449,516.70 is: 620,334.23
Step by Step Solution
- Step 1: Write the proportion equation
812,067.84 : 1,120,655.76 = 449,516.70 : x - Step 2: Convert to fraction form
812,067.84/1,120,655.76 = 449,516.70/x - Step 3: Cross multiply
812,067.84x = 1,120,655.76 × 449,516.70 - Step 4: Simplify right side
812,067.84x = 503,753,479,071.19 - Step 5: Solve for x
x = 503,753,479,071.19/812,067.84 - Step 6: Final answer
x = 620,334.23
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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.