Finding the Fourth Proportional to 1,615,563.60, 2,229,386.81 and 890,409.12
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Solution
The fourth proportional to 1,615,563.60, 2,229,386.81 and 890,409.12 is: 1,228,714.45
Step by Step Solution
- Step 1: Write the proportion equation
1,615,563.60 : 2,229,386.81 = 890,409.12 : x - Step 2: Convert to fraction form
1,615,563.60/2,229,386.81 = 890,409.12/x - Step 3: Cross multiply
1,615,563.60x = 2,229,386.81 × 890,409.12 - Step 4: Simplify right side
1,615,563.60x = 1,985,066,343,179.66 - Step 5: Solve for x
x = 1,985,066,343,179.66/1,615,563.60 - Step 6: Final answer
x = 1,228,714.45
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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.