Finding the Fourth Proportional to 1,991,214.12, 2,748,143.34 and 1,266,133.80
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Solution
The fourth proportional to 1,991,214.12, 2,748,143.34 and 1,266,133.80 is: 1,747,434.96
Step by Step Solution
- Step 1: Write the proportion equation
1,991,214.12 : 2,748,143.34 = 1,266,133.80 : x - Step 2: Convert to fraction form
1,991,214.12/2,748,143.34 = 1,266,133.80/x - Step 3: Cross multiply
1,991,214.12x = 2,748,143.34 × 1,266,133.80 - Step 4: Simplify right side
1,991,214.12x = 3,479,517,170,018.89 - Step 5: Solve for x
x = 3,479,517,170,018.89/1,991,214.12 - Step 6: Final answer
x = 1,747,434.96
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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.