Finding the Fourth Proportional to 3,819,985.88, 5,272,329.35 and 2,189,486.09
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Solution
The fourth proportional to 3,819,985.88, 5,272,329.35 and 2,189,486.09 is: 3,021,920.02
Step by Step Solution
- Step 1: Write the proportion equation
3,819,985.88 : 5,272,329.35 = 2,189,486.09 : x - Step 2: Convert to fraction form
3,819,985.88/5,272,329.35 = 2,189,486.09/x - Step 3: Cross multiply
3,819,985.88x = 5,272,329.35 × 2,189,486.09 - Step 4: Simplify right side
3,819,985.88x = 11,543,691,792,378.28 - Step 5: Solve for x
x = 11,543,691,792,378.28/3,819,985.88 - Step 6: Final answer
x = 3,021,920.02
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1.5x scale
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.