Finding the Fourth Proportional to 812,531.04, 1,121,278.98 and 449,947.09
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Solution
The fourth proportional to 812,531.04, 1,121,278.98 and 449,947.09 is: 620,919.31
Step by Step Solution
- Step 1: Write the proportion equation
812,531.04 : 1,121,278.98 = 449,947.09 : x - Step 2: Convert to fraction form
812,531.04/1,121,278.98 = 449,947.09/x - Step 3: Cross multiply
812,531.04x = 1,121,278.98 × 449,947.09 - Step 4: Simplify right side
812,531.04x = 504,516,214,129.17 - Step 5: Solve for x
x = 504,516,214,129.17/812,531.04 - Step 6: Final answer
x = 620,919.31
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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.