Finding the Fourth Proportional to 812,005.23, 1,120,569.44 and 449,454.09
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Solution
The fourth proportional to 812,005.23, 1,120,569.44 and 449,454.09 is: 620,247.87
Step by Step Solution
- Step 1: Write the proportion equation
812,005.23 : 1,120,569.44 = 449,454.09 : x - Step 2: Convert to fraction form
812,005.23/1,120,569.44 = 449,454.09/x - Step 3: Cross multiply
812,005.23x = 1,120,569.44 × 449,454.09 - Step 4: Simplify right side
812,005.23x = 503,644,515,689.74 - Step 5: Solve for x
x = 503,644,515,689.74/812,005.23 - Step 6: Final answer
x = 620,247.87
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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.