Finding the Fourth Proportional to 1,170,381.18, 1,615,257.38 and 661,116.36
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Solution
The fourth proportional to 1,170,381.18, 1,615,257.38 and 661,116.36 is: 912,414.77
Step by Step Solution
- Step 1: Write the proportion equation
1,170,381.18 : 1,615,257.38 = 661,116.36 : x - Step 2: Convert to fraction form
1,170,381.18/1,615,257.38 = 661,116.36/x - Step 3: Cross multiply
1,170,381.18x = 1,615,257.38 × 661,116.36 - Step 4: Simplify right side
1,170,381.18x = 1,067,873,079,528.74 - Step 5: Solve for x
x = 1,067,873,079,528.74/1,170,381.18 - Step 6: Final answer
x = 912,414.77
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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.