Finding the Fourth Proportional to 2,121,881.97, 2,928,263.16 and 1,155,076.71
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Solution
The fourth proportional to 2,121,881.97, 2,928,263.16 and 1,155,076.71 is: 1,594,041.80
Step by Step Solution
- Step 1: Write the proportion equation
2,121,881.97 : 2,928,263.16 = 1,155,076.71 : x - Step 2: Convert to fraction form
2,121,881.97/2,928,263.16 = 1,155,076.71/x - Step 3: Cross multiply
2,121,881.97x = 2,928,263.16 × 1,155,076.71 - Step 4: Simplify right side
2,121,881.97x = 3,382,368,570,217.55 - Step 5: Solve for x
x = 3,382,368,570,217.55/2,121,881.97 - Step 6: Final answer
x = 1,594,041.80
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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.