Finding the Fourth Proportional to 2,261,720.12, 3,121,133.74 and 1,243,124.60
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Solution
The fourth proportional to 2,261,720.12, 3,121,133.74 and 1,243,124.60 is: 1,715,489.95
Step by Step Solution
- Step 1: Write the proportion equation
2,261,720.12 : 3,121,133.74 = 1,243,124.60 : x - Step 2: Convert to fraction form
2,261,720.12/3,121,133.74 = 1,243,124.60/x - Step 3: Cross multiply
2,261,720.12x = 3,121,133.74 × 1,243,124.60 - Step 4: Simplify right side
2,261,720.12x = 3,879,958,132,084.00 - Step 5: Solve for x
x = 3,879,958,132,084.00/2,261,720.12 - Step 6: Final answer
x = 1,715,489.95
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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.