Finding the Fourth Proportional to 1,939,688.21, 2,676,852.75 and 1,080,248.47
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Solution
The fourth proportional to 1,939,688.21, 2,676,852.75 and 1,080,248.47 is: 1,490,789.12
Step by Step Solution
- Step 1: Write the proportion equation
1,939,688.21 : 2,676,852.75 = 1,080,248.47 : x - Step 2: Convert to fraction form
1,939,688.21/2,676,852.75 = 1,080,248.47/x - Step 3: Cross multiply
1,939,688.21x = 2,676,852.75 × 1,080,248.47 - Step 4: Simplify right side
1,939,688.21x = 2,891,666,087,602.79 - Step 5: Solve for x
x = 2,891,666,087,602.79/1,939,688.21 - Step 6: Final answer
x = 1,490,789.12
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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.