Finding the Fourth Proportional to 2,071,918.28, 2,859,688.32 and 1,392,461.12
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Solution
The fourth proportional to 2,071,918.28, 2,859,688.32 and 1,392,461.12 is: 1,921,892.79
Step by Step Solution
- Step 1: Write the proportion equation
2,071,918.28 : 2,859,688.32 = 1,392,461.12 : x - Step 2: Convert to fraction form
2,071,918.28/2,859,688.32 = 1,392,461.12/x - Step 3: Cross multiply
2,071,918.28x = 2,859,688.32 × 1,392,461.12 - Step 4: Simplify right side
2,071,918.28x = 3,982,004,800,918.12 - Step 5: Solve for x
x = 3,982,004,800,918.12/2,071,918.28 - Step 6: Final answer
x = 1,921,892.79
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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.