Finding the Fourth Proportional to 1,276,403,801.70, 1,914,668,688.15 and 664,183,769.70
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Solution
The fourth proportional to 1,276,403,801.70, 1,914,668,688.15 and 664,183,769.70 is: 996,308,429.45
Step by Step Solution
- Step 1: Write the proportion equation
1,276,403,801.70 : 1,914,668,688.15 = 664,183,769.70 : x - Step 2: Convert to fraction form
1,276,403,801.70/1,914,668,688.15 = 664,183,769.70/x - Step 3: Cross multiply
1,276,403,801.70x = 1,914,668,688.15 × 664,183,769.70 - Step 4: Simplify right side
1,276,403,801.70x = 1,271,691,867,022,020,864 - Step 5: Solve for x
x = 1,271,691,867,022,020,864/1,276,403,801.70 - Step 6: Final answer
x = 996,308,429.45
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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.