Finding the Fourth Proportional to 2,128,200.53, 2,936,979.05 and 1,161,393.12
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Solution
The fourth proportional to 2,128,200.53, 2,936,979.05 and 1,161,393.12 is: 1,602,756.51
Step by Step Solution
- Step 1: Write the proportion equation
2,128,200.53 : 2,936,979.05 = 1,161,393.12 : x - Step 2: Convert to fraction form
2,128,200.53/2,936,979.05 = 1,161,393.12/x - Step 3: Cross multiply
2,128,200.53x = 2,936,979.05 × 1,161,393.12 - Step 4: Simplify right side
2,128,200.53x = 3,410,987,256,447.17 - Step 5: Solve for x
x = 3,410,987,256,447.17/2,128,200.53 - Step 6: Final answer
x = 1,602,756.51
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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.