Finding the Fourth Proportional to 1,386,687.60, 2,080,261.80 and 545,266.80
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Solution
The fourth proportional to 1,386,687.60, 2,080,261.80 and 545,266.80 is: 817,990.80
Step by Step Solution
- Step 1: Write the proportion equation
1,386,687.60 : 2,080,261.80 = 545,266.80 : x - Step 2: Convert to fraction form
1,386,687.60/2,080,261.80 = 545,266.80/x - Step 3: Cross multiply
1,386,687.60x = 2,080,261.80 × 545,266.80 - Step 4: Simplify right side
1,386,687.60x = 1,134,297,694,848.24 - Step 5: Solve for x
x = 1,134,297,694,848.24/1,386,687.60 - Step 6: Final answer
x = 817,990.80
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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.