Finding the Fourth Proportional to 921,552.21, 1,271,747.84 and 513,679.85
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Solution
The fourth proportional to 921,552.21, 1,271,747.84 and 513,679.85 is: 708,881.41
Step by Step Solution
- Step 1: Write the proportion equation
921,552.21 : 1,271,747.84 = 513,679.85 : x - Step 2: Convert to fraction form
921,552.21/1,271,747.84 = 513,679.85/x - Step 3: Cross multiply
921,552.21x = 1,271,747.84 × 513,679.85 - Step 4: Simplify right side
921,552.21x = 653,271,230,761.89 - Step 5: Solve for x
x = 653,271,230,761.89/921,552.21 - Step 6: Final answer
x = 708,881.41
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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.