Finding the Fourth Proportional to 1,909,691,936.80, 2,864,537,905.20 and 1,819,293,822.70
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Solution
The fourth proportional to 1,909,691,936.80, 2,864,537,905.20 and 1,819,293,822.70 is: 2,728,940,734.05
Step by Step Solution
- Step 1: Write the proportion equation
1,909,691,936.80 : 2,864,537,905.20 = 1,819,293,822.70 : x - Step 2: Convert to fraction form
1,909,691,936.80/2,864,537,905.20 = 1,819,293,822.70/x - Step 3: Cross multiply
1,909,691,936.80x = 2,864,537,905.20 × 1,819,293,822.70 - Step 4: Simplify right side
1,909,691,936.80x = 5,211,436,115,820,357,632 - Step 5: Solve for x
x = 5,211,436,115,820,357,632/1,909,691,936.80 - Step 6: Final answer
x = 2,728,940,734.05
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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.