Finding the Fourth Proportional to 808,138.76, 1,115,239.38 and 445,575.56
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Solution
The fourth proportional to 808,138.76, 1,115,239.38 and 445,575.56 is: 614,898.62
Step by Step Solution
- Step 1: Write the proportion equation
808,138.76 : 1,115,239.38 = 445,575.56 : x - Step 2: Convert to fraction form
808,138.76/1,115,239.38 = 445,575.56/x - Step 3: Cross multiply
808,138.76x = 1,115,239.38 × 445,575.56 - Step 4: Simplify right side
808,138.76x = 496,923,411,277.55 - Step 5: Solve for x
x = 496,923,411,277.55/808,138.76 - Step 6: Final answer
x = 614,898.62
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1.5x scale
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.