Finding the Fourth Proportional to 3,480,869.48, 5,221,189.08 and 1,431,459.12
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Solution
The fourth proportional to 3,480,869.48, 5,221,189.08 and 1,431,459.12 is: 2,147,141.33
Step by Step Solution
- Step 1: Write the proportion equation
3,480,869.48 : 5,221,189.08 = 1,431,459.12 : x - Step 2: Convert to fraction form
3,480,869.48/5,221,189.08 = 1,431,459.12/x - Step 3: Cross multiply
3,480,869.48x = 5,221,189.08 × 1,431,459.12 - Step 4: Simplify right side
3,480,869.48x = 7,473,918,725,810.41 - Step 5: Solve for x
x = 7,473,918,725,810.41/3,480,869.48 - Step 6: Final answer
x = 2,147,141.33
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.