Finding the Fourth Proportional to 1,042,091.19, 1,438,085.81 and 565,163.19
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Solution
The fourth proportional to 1,042,091.19, 1,438,085.81 and 565,163.19 is: 779,925.19
Step by Step Solution
- Step 1: Write the proportion equation
1,042,091.19 : 1,438,085.81 = 565,163.19 : x - Step 2: Convert to fraction form
1,042,091.19/1,438,085.81 = 565,163.19/x - Step 3: Cross multiply
1,042,091.19x = 1,438,085.81 × 565,163.19 - Step 4: Simplify right side
1,042,091.19x = 812,753,165,286.24 - Step 5: Solve for x
x = 812,753,165,286.24/1,042,091.19 - Step 6: Final answer
x = 779,925.19
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Double scale
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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.