Finding the Fourth Proportional to 1,170,543.68, 1,615,481.40 and 661,278.84
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Solution
The fourth proportional to 1,170,543.68, 1,615,481.40 and 661,278.84 is: 912,638.87
Step by Step Solution
- Step 1: Write the proportion equation
1,170,543.68 : 1,615,481.40 = 661,278.84 : x - Step 2: Convert to fraction form
1,170,543.68/1,615,481.40 = 661,278.84/x - Step 3: Cross multiply
1,170,543.68x = 1,615,481.40 × 661,278.84 - Step 4: Simplify right side
1,170,543.68x = 1,068,283,666,233.58 - Step 5: Solve for x
x = 1,068,283,666,233.58/1,170,543.68 - Step 6: Final answer
x = 912,638.87
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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.