Finding the Fourth Proportional to 3,779,434.80, 5,215,395.30 and 2,147,615.69
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Solution
The fourth proportional to 3,779,434.80, 5,215,395.30 and 2,147,615.69 is: 2,963,581.95
Step by Step Solution
- Step 1: Write the proportion equation
3,779,434.80 : 5,215,395.30 = 2,147,615.69 : x - Step 2: Convert to fraction form
3,779,434.80/5,215,395.30 = 2,147,615.69/x - Step 3: Cross multiply
3,779,434.80x = 5,215,395.30 × 2,147,615.69 - Step 4: Simplify right side
3,779,434.80x = 11,200,664,749,755.28 - Step 5: Solve for x
x = 11,200,664,749,755.28/3,779,434.80 - Step 6: Final answer
x = 2,963,581.95
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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.