Finding the Fourth Proportional to 1,590,721.64, 2,195,163.30 and 865,583.72
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Solution
The fourth proportional to 1,590,721.64, 2,195,163.30 and 865,583.72 is: 1,194,487.81
Step by Step Solution
- Step 1: Write the proportion equation
1,590,721.64 : 2,195,163.30 = 865,583.72 : x - Step 2: Convert to fraction form
1,590,721.64/2,195,163.30 = 865,583.72/x - Step 3: Cross multiply
1,590,721.64x = 2,195,163.30 × 865,583.72 - Step 4: Simplify right side
1,590,721.64x = 1,900,097,615,221.48 - Step 5: Solve for x
x = 1,900,097,615,221.48/1,590,721.64 - Step 6: Final answer
x = 1,194,487.81
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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.