Finding the Fourth Proportional to 1,551,778.59, 2,140,751.10 and 1,121,376.99
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Solution
The fourth proportional to 1,551,778.59, 2,140,751.10 and 1,121,376.99 is: 1,546,991.97
Step by Step Solution
- Step 1: Write the proportion equation
1,551,778.59 : 2,140,751.10 = 1,121,376.99 : x - Step 2: Convert to fraction form
1,551,778.59/2,140,751.10 = 1,121,376.99/x - Step 3: Cross multiply
1,551,778.59x = 2,140,751.10 × 1,121,376.99 - Step 4: Simplify right side
1,551,778.59x = 2,400,589,024,857.19 - Step 5: Solve for x
x = 2,400,589,024,857.19/1,551,778.59 - Step 6: Final answer
x = 1,546,991.97
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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.