Finding the Fourth Proportional to 1,387,103.80, 2,080,713.30 and 440,447.80
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Solution
The fourth proportional to 1,387,103.80, 2,080,713.30 and 440,447.80 is: 660,689.99
Step by Step Solution
- Step 1: Write the proportion equation
1,387,103.80 : 2,080,713.30 = 440,447.80 : x - Step 2: Convert to fraction form
1,387,103.80/2,080,713.30 = 440,447.80/x - Step 3: Cross multiply
1,387,103.80x = 2,080,713.30 × 440,447.80 - Step 4: Simplify right side
1,387,103.80x = 916,445,595,415.74 - Step 5: Solve for x
x = 916,445,595,415.74/1,387,103.80 - Step 6: Final answer
x = 660,689.99
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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.