Finding the Fourth Proportional to 2,135,981.60, 2,947,643.84 and 1,155,919.92
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Solution
The fourth proportional to 2,135,981.60, 2,947,643.84 and 1,155,919.92 is: 1,595,163.66
Step by Step Solution
- Step 1: Write the proportion equation
2,135,981.60 : 2,947,643.84 = 1,155,919.92 : x - Step 2: Convert to fraction form
2,135,981.60/2,947,643.84 = 1,155,919.92/x - Step 3: Cross multiply
2,135,981.60x = 2,947,643.84 × 1,155,919.92 - Step 4: Simplify right side
2,135,981.60x = 3,407,240,231,721.29 - Step 5: Solve for x
x = 3,407,240,231,721.29/2,135,981.60 - Step 6: Final answer
x = 1,595,163.66
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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.