Finding the Fourth Proportional to 2,164,790.28, 2,987,833.14 and 1,305,490.44
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Solution
The fourth proportional to 2,164,790.28, 2,987,833.14 and 1,305,490.44 is: 1,801,831.63
Step by Step Solution
- Step 1: Write the proportion equation
2,164,790.28 : 2,987,833.14 = 1,305,490.44 : x - Step 2: Convert to fraction form
2,164,790.28/2,987,833.14 = 1,305,490.44/x - Step 3: Cross multiply
2,164,790.28x = 2,987,833.14 × 1,305,490.44 - Step 4: Simplify right side
2,164,790.28x = 3,900,587,600,585.18 - Step 5: Solve for x
x = 3,900,587,600,585.18/2,164,790.28 - Step 6: Final answer
x = 1,801,831.63
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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.