Finding the Fourth Proportional to 2,121,981.40, 2,928,334.71 and 1,155,118.96
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Solution
The fourth proportional to 2,121,981.40, 2,928,334.71 and 1,155,118.96 is: 1,594,064.37
Step by Step Solution
- Step 1: Write the proportion equation
2,121,981.40 : 2,928,334.71 = 1,155,118.96 : x - Step 2: Convert to fraction form
2,121,981.40/2,928,334.71 = 1,155,118.96/x - Step 3: Cross multiply
2,121,981.40x = 2,928,334.71 × 1,155,118.96 - Step 4: Simplify right side
2,121,981.40x = 3,382,574,952,739.22 - Step 5: Solve for x
x = 3,382,574,952,739.22/2,121,981.40 - Step 6: Final answer
x = 1,594,064.37
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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.