Finding the Fourth Proportional to 409,785.42, 565,260.18 and 318,997.68
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Solution
The fourth proportional to 409,785.42, 565,260.18 and 318,997.68 is: 440,027.09
Step by Step Solution
- Step 1: Write the proportion equation
409,785.42 : 565,260.18 = 318,997.68 : x - Step 2: Convert to fraction form
409,785.42/565,260.18 = 318,997.68/x - Step 3: Cross multiply
409,785.42x = 565,260.18 × 318,997.68 - Step 4: Simplify right side
409,785.42x = 180,316,686,016.38 - Step 5: Solve for x
x = 180,316,686,016.38/409,785.42 - Step 6: Final answer
x = 440,027.09
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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.