Finding the Fourth Proportional to 1,310,691.12, 1,809,311.20 and 881,220.20
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Solution
The fourth proportional to 1,310,691.12, 1,809,311.20 and 881,220.20 is: 1,216,458.67
Step by Step Solution
- Step 1: Write the proportion equation
1,310,691.12 : 1,809,311.20 = 881,220.20 : x - Step 2: Convert to fraction form
1,310,691.12/1,809,311.20 = 881,220.20/x - Step 3: Cross multiply
1,310,691.12x = 1,809,311.20 × 881,220.20 - Step 4: Simplify right side
1,310,691.12x = 1,594,401,577,526.24 - Step 5: Solve for x
x = 1,594,401,577,526.24/1,310,691.12 - Step 6: Final answer
x = 1,216,458.67
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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.