Finding the Fourth Proportional to 1,112,626.80, 1,668,211.20 and 438,301.80
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Solution
The fourth proportional to 1,112,626.80, 1,668,211.20 and 438,301.80 is: 657,165.52
Step by Step Solution
- Step 1: Write the proportion equation
1,112,626.80 : 1,668,211.20 = 438,301.80 : x - Step 2: Convert to fraction form
1,112,626.80/1,668,211.20 = 438,301.80/x - Step 3: Cross multiply
1,112,626.80x = 1,668,211.20 × 438,301.80 - Step 4: Simplify right side
1,112,626.80x = 731,179,971,740.16 - Step 5: Solve for x
x = 731,179,971,740.16/1,112,626.80 - Step 6: Final answer
x = 657,165.52
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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.