Finding the Fourth Proportional to 1,418,808.80, 2,128,407.60 and 472,080.80
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Solution
The fourth proportional to 1,418,808.80, 2,128,407.60 and 472,080.80 is: 708,185.88
Step by Step Solution
- Step 1: Write the proportion equation
1,418,808.80 : 2,128,407.60 = 472,080.80 : x - Step 2: Convert to fraction form
1,418,808.80/2,128,407.60 = 472,080.80/x - Step 3: Cross multiply
1,418,808.80x = 2,128,407.60 × 472,080.80 - Step 4: Simplify right side
1,418,808.80x = 1,004,780,362,534.08 - Step 5: Solve for x
x = 1,004,780,362,534.08/1,418,808.80 - Step 6: Final answer
x = 708,185.88
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.