Finding the Fourth Proportional to 748,619.20, 1,122,928.80 and 299,117.80
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Solution
The fourth proportional to 748,619.20, 1,122,928.80 and 299,117.80 is: 448,676.70
Step by Step Solution
- Step 1: Write the proportion equation
748,619.20 : 1,122,928.80 = 299,117.80 : x - Step 2: Convert to fraction form
748,619.20/1,122,928.80 = 299,117.80/x - Step 3: Cross multiply
748,619.20x = 1,122,928.80 × 299,117.80 - Step 4: Simplify right side
748,619.20x = 335,887,992,212.64 - Step 5: Solve for x
x = 335,887,992,212.64/748,619.20 - Step 6: Final answer
x = 448,676.70
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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.