Finding the Fourth Proportional to 443,103.66, 609,943.68 and 386,416.62
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Solution
The fourth proportional to 443,103.66, 609,943.68 and 386,416.62 is: 531,912.50
Step by Step Solution
- Step 1: Write the proportion equation
443,103.66 : 609,943.68 = 386,416.62 : x - Step 2: Convert to fraction form
443,103.66/609,943.68 = 386,416.62/x - Step 3: Cross multiply
443,103.66x = 609,943.68 × 386,416.62 - Step 4: Simplify right side
443,103.66x = 235,692,375,215.96 - Step 5: Solve for x
x = 235,692,375,215.96/443,103.66 - Step 6: Final answer
x = 531,912.50
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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.