Finding the Fourth Proportional to 819,648.24, 1,229,516.10 and 258,639
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Solution
The fourth proportional to 819,648.24, 1,229,516.10 and 258,639 is: 387,972.30
Step by Step Solution
- Step 1: Write the proportion equation
819,648.24 : 1,229,516.10 = 258,639 : x - Step 2: Convert to fraction form
819,648.24/1,229,516.10 = 258,639/x - Step 3: Cross multiply
819,648.24x = 1,229,516.10 × 258,639 - Step 4: Simplify right side
819,648.24x = 318,000,814,587.90 - Step 5: Solve for x
x = 318,000,814,587.90/819,648.24 - Step 6: Final answer
x = 387,972.30
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.