Finding the Fourth Proportional to 921,516.14, 1,271,538.09 and 513,528.55
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Solution
The fourth proportional to 921,516.14, 1,271,538.09 and 513,528.55 is: 708,583.48
Step by Step Solution
- Step 1: Write the proportion equation
921,516.14 : 1,271,538.09 = 513,528.55 : x - Step 2: Convert to fraction form
921,516.14/1,271,538.09 = 513,528.55/x - Step 3: Cross multiply
921,516.14x = 1,271,538.09 × 513,528.55 - Step 4: Simplify right side
921,516.14x = 652,971,111,627.47 - Step 5: Solve for x
x = 652,971,111,627.47/921,516.14 - Step 6: Final answer
x = 708,583.48
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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.