Finding the Fourth Proportional to 1,251,119,180.31, 1,726,430,359.76 and 742,394,236.90
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Solution
The fourth proportional to 1,251,119,180.31, 1,726,430,359.76 and 742,394,236.90 is: 1,024,436,336.42
Step by Step Solution
- Step 1: Write the proportion equation
1,251,119,180.31 : 1,726,430,359.76 = 742,394,236.90 : x - Step 2: Convert to fraction form
1,251,119,180.31/1,726,430,359.76 = 742,394,236.90/x - Step 3: Cross multiply
1,251,119,180.31x = 1,726,430,359.76 × 742,394,236.90 - Step 4: Simplify right side
1,251,119,180.31x = 1,281,691,949,492,964,864 - Step 5: Solve for x
x = 1,281,691,949,492,964,864/1,251,119,180.31 - Step 6: Final answer
x = 1,024,436,336.42
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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.