Finding the Fourth Proportional to 1,170,418.30, 1,615,276.71 and 661,214.14
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Solution
The fourth proportional to 1,170,418.30, 1,615,276.71 and 661,214.14 is: 912,531.70
Step by Step Solution
- Step 1: Write the proportion equation
1,170,418.30 : 1,615,276.71 = 661,214.14 : x - Step 2: Convert to fraction form
1,170,418.30/1,615,276.71 = 661,214.14/x - Step 3: Cross multiply
1,170,418.30x = 1,615,276.71 × 661,214.14 - Step 4: Simplify right side
1,170,418.30x = 1,068,043,800,664.68 - Step 5: Solve for x
x = 1,068,043,800,664.68/1,170,418.30 - Step 6: Final answer
x = 912,531.70
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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.