Finding the Fourth Proportional to 1,531,207.80, 2,113,022.70 and 852,129.72
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Solution
The fourth proportional to 1,531,207.80, 2,113,022.70 and 852,129.72 is: 1,175,914.49
Step by Step Solution
- Step 1: Write the proportion equation
1,531,207.80 : 2,113,022.70 = 852,129.72 : x - Step 2: Convert to fraction form
1,531,207.80/2,113,022.70 = 852,129.72/x - Step 3: Cross multiply
1,531,207.80x = 2,113,022.70 × 852,129.72 - Step 4: Simplify right side
1,531,207.80x = 1,800,569,441,704.64 - Step 5: Solve for x
x = 1,800,569,441,704.64/1,531,207.80 - Step 6: Final answer
x = 1,175,914.49
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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.