Finding the Fourth Proportional to 921,504.57, 1,271,682.21 and 513,632.31
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Solution
The fourth proportional to 921,504.57, 1,271,682.21 and 513,632.31 is: 708,815.88
Step by Step Solution
- Step 1: Write the proportion equation
921,504.57 : 1,271,682.21 = 513,632.31 : x - Step 2: Convert to fraction form
921,504.57/1,271,682.21 = 513,632.31/x - Step 3: Cross multiply
921,504.57x = 1,271,682.21 × 513,632.31 - Step 4: Simplify right side
921,504.57x = 653,177,071,108.21 - Step 5: Solve for x
x = 653,177,071,108.21/921,504.57 - Step 6: Final answer
x = 708,815.88
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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.