Finding the Fourth Proportional to 921,043.68, 1,271,133.68 and 513,211.92
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Solution
The fourth proportional to 921,043.68, 1,271,133.68 and 513,211.92 is: 708,284.49
Step by Step Solution
- Step 1: Write the proportion equation
921,043.68 : 1,271,133.68 = 513,211.92 : x - Step 2: Convert to fraction form
921,043.68/1,271,133.68 = 513,211.92/x - Step 3: Cross multiply
921,043.68x = 1,271,133.68 × 513,211.92 - Step 4: Simplify right side
921,043.68x = 652,360,956,489.47 - Step 5: Solve for x
x = 652,360,956,489.47/921,043.68 - Step 6: Final answer
x = 708,284.49
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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.