Finding the Fourth Proportional to 665,682.12, 918,535.14 and 379,207.80
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Solution
The fourth proportional to 665,682.12, 918,535.14 and 379,207.80 is: 523,246.28
Step by Step Solution
- Step 1: Write the proportion equation
665,682.12 : 918,535.14 = 379,207.80 : x - Step 2: Convert to fraction form
665,682.12/918,535.14 = 379,207.80/x - Step 3: Cross multiply
665,682.12x = 918,535.14 × 379,207.80 - Step 4: Simplify right side
665,682.12x = 348,315,689,662.09 - Step 5: Solve for x
x = 348,315,689,662.09/665,682.12 - Step 6: Final answer
x = 523,246.28
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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.