Finding the Fourth Proportional to 2,143,948.36, 2,958,731.94 and 1,177,119.40
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Solution
The fourth proportional to 2,143,948.36, 2,958,731.94 and 1,177,119.40 is: 1,624,470.45
Step by Step Solution
- Step 1: Write the proportion equation
2,143,948.36 : 2,958,731.94 = 1,177,119.40 : x - Step 2: Convert to fraction form
2,143,948.36/2,958,731.94 = 1,177,119.40/x - Step 3: Cross multiply
2,143,948.36x = 2,958,731.94 × 1,177,119.40 - Step 4: Simplify right side
2,143,948.36x = 3,482,780,765,973.64 - Step 5: Solve for x
x = 3,482,780,765,973.64/2,143,948.36 - Step 6: Final answer
x = 1,624,470.45
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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.