Finding the Fourth Proportional to 687,469.75, 948,714.74 and 385,670.23
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Solution
The fourth proportional to 687,469.75, 948,714.74 and 385,670.23 is: 532,228.56
Step by Step Solution
- Step 1: Write the proportion equation
687,469.75 : 948,714.74 = 385,670.23 : x - Step 2: Convert to fraction form
687,469.75/948,714.74 = 385,670.23/x - Step 3: Cross multiply
687,469.75x = 948,714.74 × 385,670.23 - Step 4: Simplify right side
687,469.75x = 365,891,031,980.19 - Step 5: Solve for x
x = 365,891,031,980.19/687,469.75 - Step 6: Final answer
x = 532,228.56
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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.