Finding the Fourth Proportional to 3,181,735.40, 4,390,847.70 and 1,731,491.96
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Solution
The fourth proportional to 3,181,735.40, 4,390,847.70 and 1,731,491.96 is: 2,389,487.66
Step by Step Solution
- Step 1: Write the proportion equation
3,181,735.40 : 4,390,847.70 = 1,731,491.96 : x - Step 2: Convert to fraction form
3,181,735.40/4,390,847.70 = 1,731,491.96/x - Step 3: Cross multiply
3,181,735.40x = 4,390,847.70 × 1,731,491.96 - Step 4: Simplify right side
3,181,735.40x = 7,602,717,490,134.49 - Step 5: Solve for x
x = 7,602,717,490,134.49/3,181,735.40 - Step 6: Final answer
x = 2,389,487.66
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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.