Finding the Fourth Proportional to 2,128,479.97, 3,190,821.13 and 780,327.81
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Solution
The fourth proportional to 2,128,479.97, 3,190,821.13 and 780,327.81 is: 1,169,795.58
Step by Step Solution
- Step 1: Write the proportion equation
2,128,479.97 : 3,190,821.13 = 780,327.81 : x - Step 2: Convert to fraction form
2,128,479.97/3,190,821.13 = 780,327.81/x - Step 3: Cross multiply
2,128,479.97x = 3,190,821.13 × 780,327.81 - Step 4: Simplify right side
2,128,479.97x = 2,489,886,464,474.63 - Step 5: Solve for x
x = 2,489,886,464,474.63/2,128,479.97 - Step 6: Final answer
x = 1,169,795.58
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.