Finding the Fourth Proportional to 1,229,489.19, 1,696,702.49 and 685,659.36
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Solution
The fourth proportional to 1,229,489.19, 1,696,702.49 and 685,659.36 is: 946,214.05
Step by Step Solution
- Step 1: Write the proportion equation
1,229,489.19 : 1,696,702.49 = 685,659.36 : x - Step 2: Convert to fraction form
1,229,489.19/1,696,702.49 = 685,659.36/x - Step 3: Cross multiply
1,229,489.19x = 1,696,702.49 × 685,659.36 - Step 4: Simplify right side
1,229,489.19x = 1,163,359,943,403.81 - Step 5: Solve for x
x = 1,163,359,943,403.81/1,229,489.19 - Step 6: Final answer
x = 946,214.05
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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.