Finding the Fourth Proportional to 748,043.60, 1,122,770.10 and 393,312.20
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Solution
The fourth proportional to 748,043.60, 1,122,770.10 and 393,312.20 is: 590,338.82
Step by Step Solution
- Step 1: Write the proportion equation
748,043.60 : 1,122,770.10 = 393,312.20 : x - Step 2: Convert to fraction form
748,043.60/1,122,770.10 = 393,312.20/x - Step 3: Cross multiply
748,043.60x = 1,122,770.10 × 393,312.20 - Step 4: Simplify right side
748,043.60x = 441,599,178,125.22 - Step 5: Solve for x
x = 441,599,178,125.22/748,043.60 - Step 6: Final answer
x = 590,338.82
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.