Finding the Fourth Proportional to 1,911,729.13, 2,638,438.13 and 1,147,831.90
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Solution
The fourth proportional to 1,911,729.13, 2,638,438.13 and 1,147,831.90 is: 1,584,159.29
Step by Step Solution
- Step 1: Write the proportion equation
1,911,729.13 : 2,638,438.13 = 1,147,831.90 : x - Step 2: Convert to fraction form
1,911,729.13/2,638,438.13 = 1,147,831.90/x - Step 3: Cross multiply
1,911,729.13x = 2,638,438.13 × 1,147,831.90 - Step 4: Simplify right side
1,911,729.13x = 3,028,483,451,790.35 - Step 5: Solve for x
x = 3,028,483,451,790.35/1,911,729.13 - Step 6: Final answer
x = 1,584,159.29
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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.