Finding the Fourth Proportional to 1,939,642.64, 2,676,515.12 and 1,080,282.88
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Solution
The fourth proportional to 1,939,642.64, 2,676,515.12 and 1,080,282.88 is: 1,490,683.59
Step by Step Solution
- Step 1: Write the proportion equation
1,939,642.64 : 2,676,515.12 = 1,080,282.88 : x - Step 2: Convert to fraction form
1,939,642.64/2,676,515.12 = 1,080,282.88/x - Step 3: Cross multiply
1,939,642.64x = 2,676,515.12 × 1,080,282.88 - Step 4: Simplify right side
1,939,642.64x = 2,891,393,462,197.15 - Step 5: Solve for x
x = 2,891,393,462,197.15/1,939,642.64 - Step 6: Final answer
x = 1,490,683.59
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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.