Finding the Fourth Proportional to 1,979,929.12, 2,730,236.88 and 1,174,957.60
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Solution
The fourth proportional to 1,979,929.12, 2,730,236.88 and 1,174,957.60 is: 1,620,215.87
Step by Step Solution
- Step 1: Write the proportion equation
1,979,929.12 : 2,730,236.88 = 1,174,957.60 : x - Step 2: Convert to fraction form
1,979,929.12/2,730,236.88 = 1,174,957.60/x - Step 3: Cross multiply
1,979,929.12x = 2,730,236.88 × 1,174,957.60 - Step 4: Simplify right side
1,979,929.12x = 3,207,912,571,956.29 - Step 5: Solve for x
x = 3,207,912,571,956.29/1,979,929.12 - Step 6: Final answer
x = 1,620,215.87
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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.