Finding the Fourth Proportional to 1,645,441.21, 2,270,695.80 and 920,288.36
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Solution
The fourth proportional to 1,645,441.21, 2,270,695.80 and 920,288.36 is: 1,269,990.62
Step by Step Solution
- Step 1: Write the proportion equation
1,645,441.21 : 2,270,695.80 = 920,288.36 : x - Step 2: Convert to fraction form
1,645,441.21/2,270,695.80 = 920,288.36/x - Step 3: Cross multiply
1,645,441.21x = 2,270,695.80 × 920,288.36 - Step 4: Simplify right side
1,645,441.21x = 2,089,694,911,002.52 - Step 5: Solve for x
x = 2,089,694,911,002.52/1,645,441.21 - Step 6: Final answer
x = 1,269,990.62
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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.