Finding the Fourth Proportional to 685,781.07, 1,028,768.00 and 286,330.92
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Solution
The fourth proportional to 685,781.07, 1,028,768.00 and 286,330.92 is: 429,536.63
Step by Step Solution
- Step 1: Write the proportion equation
685,781.07 : 1,028,768.00 = 286,330.92 : x - Step 2: Convert to fraction form
685,781.07/1,028,768.00 = 286,330.92/x - Step 3: Cross multiply
685,781.07x = 1,028,768.00 × 286,330.92 - Step 4: Simplify right side
685,781.07x = 294,568,086,474.91 - Step 5: Solve for x
x = 294,568,086,474.91/685,781.07 - Step 6: Final answer
x = 429,536.63
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.