Finding the Fourth Proportional to 1,107,640.36, 1,528,828.07 and 721,418.18
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Solution
The fourth proportional to 1,107,640.36, 1,528,828.07 and 721,418.18 is: 995,742.30
Step by Step Solution
- Step 1: Write the proportion equation
1,107,640.36 : 1,528,828.07 = 721,418.18 : x - Step 2: Convert to fraction form
1,107,640.36/1,528,828.07 = 721,418.18/x - Step 3: Cross multiply
1,107,640.36x = 1,528,828.07 × 721,418.18 - Step 4: Simplify right side
1,107,640.36x = 1,102,924,363,792.31 - Step 5: Solve for x
x = 1,102,924,363,792.31/1,107,640.36 - Step 6: Final answer
x = 995,742.30
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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.