Finding the Fourth Proportional to 1,390,958.40, 2,085,919.20 and 492,052.80
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Solution
The fourth proportional to 1,390,958.40, 2,085,919.20 and 492,052.80 is: 737,895.82
Step by Step Solution
- Step 1: Write the proportion equation
1,390,958.40 : 2,085,919.20 = 492,052.80 : x - Step 2: Convert to fraction form
1,390,958.40/2,085,919.20 = 492,052.80/x - Step 3: Cross multiply
1,390,958.40x = 2,085,919.20 × 492,052.80 - Step 4: Simplify right side
1,390,958.40x = 1,026,382,382,933.76 - Step 5: Solve for x
x = 1,026,382,382,933.76/1,390,958.40 - Step 6: Final answer
x = 737,895.82
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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.