Finding the Fourth Proportional to 1,640,267.21, 2,263,570.17 and 915,115.04
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Solution
The fourth proportional to 1,640,267.21, 2,263,570.17 and 915,115.04 is: 1,262,859.55
Step by Step Solution
- Step 1: Write the proportion equation
1,640,267.21 : 2,263,570.17 = 915,115.04 : x - Step 2: Convert to fraction form
1,640,267.21/2,263,570.17 = 915,115.04/x - Step 3: Cross multiply
1,640,267.21x = 2,263,570.17 × 915,115.04 - Step 4: Simplify right side
1,640,267.21x = 2,071,427,106,662.36 - Step 5: Solve for x
x = 2,071,427,106,662.36/1,640,267.21 - Step 6: Final answer
x = 1,262,859.55
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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.