Finding the Fourth Proportional to 1,321,127,736.84, 1,982,464,353.69 and 492,653,733.12
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Solution
The fourth proportional to 1,321,127,736.84, 1,982,464,353.69 and 492,653,733.12 is: 739,268,760.61
Step by Step Solution
- Step 1: Write the proportion equation
1,321,127,736.84 : 1,982,464,353.69 = 492,653,733.12 : x - Step 2: Convert to fraction form
1,321,127,736.84/1,982,464,353.69 = 492,653,733.12/x - Step 3: Cross multiply
1,321,127,736.84x = 1,982,464,353.69 × 492,653,733.12 - Step 4: Simplify right side
1,321,127,736.84x = 976,668,464,622,706,560 - Step 5: Solve for x
x = 976,668,464,622,706,560/1,321,127,736.84 - Step 6: Final answer
x = 739,268,760.61
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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.