Finding the Fourth Proportional to 1,281,889.96, 1,764,958.88 and 1,128,824.26
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Solution
The fourth proportional to 1,281,889.96, 1,764,958.88 and 1,128,824.26 is: 1,554,211.72
Step by Step Solution
- Step 1: Write the proportion equation
1,281,889.96 : 1,764,958.88 = 1,128,824.26 : x - Step 2: Convert to fraction form
1,281,889.96/1,764,958.88 = 1,128,824.26/x - Step 3: Cross multiply
1,281,889.96x = 1,764,958.88 × 1,128,824.26 - Step 4: Simplify right side
1,281,889.96x = 1,992,328,401,646.43 - Step 5: Solve for x
x = 1,992,328,401,646.43/1,281,889.96 - Step 6: Final answer
x = 1,554,211.72
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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.