Finding the Fourth Proportional to 2,128,423.32, 2,937,286.44 and 1,161,615.62
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Solution
The fourth proportional to 2,128,423.32, 2,937,286.44 and 1,161,615.62 is: 1,603,063.53
Step by Step Solution
- Step 1: Write the proportion equation
2,128,423.32 : 2,937,286.44 = 1,161,615.62 : x - Step 2: Convert to fraction form
2,128,423.32/2,937,286.44 = 1,161,615.62/x - Step 3: Cross multiply
2,128,423.32x = 2,937,286.44 × 1,161,615.62 - Step 4: Simplify right side
2,128,423.32x = 3,411,997,794,431.76 - Step 5: Solve for x
x = 3,411,997,794,431.76/2,128,423.32 - Step 6: Final answer
x = 1,603,063.53
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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.