Finding the Fourth Proportional to 405,036.75, 558,532.09 and 347,865.38
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Solution
The fourth proportional to 405,036.75, 558,532.09 and 347,865.38 is: 479,694.69
Step by Step Solution
- Step 1: Write the proportion equation
405,036.75 : 558,532.09 = 347,865.38 : x - Step 2: Convert to fraction form
405,036.75/558,532.09 = 347,865.38/x - Step 3: Cross multiply
405,036.75x = 558,532.09 × 347,865.38 - Step 4: Simplify right side
405,036.75x = 194,293,977,730.04 - Step 5: Solve for x
x = 194,293,977,730.04/405,036.75 - Step 6: Final answer
x = 479,694.69
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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.