Finding the Fourth Proportional to 2,121,893.76, 2,928,213.75 and 1,155,023.99
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Solution
The fourth proportional to 2,121,893.76, 2,928,213.75 and 1,155,023.99 is: 1,593,933.30
Step by Step Solution
- Step 1: Write the proportion equation
2,121,893.76 : 2,928,213.75 = 1,155,023.99 : x - Step 2: Convert to fraction form
2,121,893.76/2,928,213.75 = 1,155,023.99/x - Step 3: Cross multiply
2,121,893.76x = 2,928,213.75 × 1,155,023.99 - Step 4: Simplify right side
2,121,893.76x = 3,382,157,129,097.86 - Step 5: Solve for x
x = 3,382,157,129,097.86/2,121,893.76 - Step 6: Final answer
x = 1,593,933.30
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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.