Finding the Fourth Proportional to 1,538,901.65, 2,122,582.82 and 1,080,118.58
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Solution
The fourth proportional to 1,538,901.65, 2,122,582.82 and 1,080,118.58 is: 1,489,790.54
Step by Step Solution
- Step 1: Write the proportion equation
1,538,901.65 : 2,122,582.82 = 1,080,118.58 : x - Step 2: Convert to fraction form
1,538,901.65/2,122,582.82 = 1,080,118.58/x - Step 3: Cross multiply
1,538,901.65x = 2,122,582.82 × 1,080,118.58 - Step 4: Simplify right side
1,538,901.65x = 2,292,641,125,457.29 - Step 5: Solve for x
x = 2,292,641,125,457.29/1,538,901.65 - Step 6: Final answer
x = 1,489,790.54
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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.