Finding the Fourth Proportional to 1,107,130.20, 1,660,695.30 and 1,012,651.80
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Solution
The fourth proportional to 1,107,130.20, 1,660,695.30 and 1,012,651.80 is: 1,518,977.70
Step by Step Solution
- Step 1: Write the proportion equation
1,107,130.20 : 1,660,695.30 = 1,012,651.80 : x - Step 2: Convert to fraction form
1,107,130.20/1,660,695.30 = 1,012,651.80/x - Step 3: Cross multiply
1,107,130.20x = 1,660,695.30 × 1,012,651.80 - Step 4: Simplify right side
1,107,130.20x = 1,681,706,084,796.54 - Step 5: Solve for x
x = 1,681,706,084,796.54/1,107,130.20 - Step 6: Final answer
x = 1,518,977.70
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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.