Finding the Fourth Proportional to 642,239.66, 886,279.64 and 355,753.74
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Solution
The fourth proportional to 642,239.66, 886,279.64 and 355,753.74 is: 490,934.02
Step by Step Solution
- Step 1: Write the proportion equation
642,239.66 : 886,279.64 = 355,753.74 : x - Step 2: Convert to fraction form
642,239.66/886,279.64 = 355,753.74/x - Step 3: Cross multiply
642,239.66x = 886,279.64 × 355,753.74 - Step 4: Simplify right side
642,239.66x = 315,297,296,615.85 - Step 5: Solve for x
x = 315,297,296,615.85/642,239.66 - Step 6: Final answer
x = 490,934.02
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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.