Finding the Fourth Proportional to 1,276,403,797.70, 1,914,668,682.15 and 664,183,765.70
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Solution
The fourth proportional to 1,276,403,797.70, 1,914,668,682.15 and 664,183,765.70 is: 996,308,423.45
Step by Step Solution
- Step 1: Write the proportion equation
1,276,403,797.70 : 1,914,668,682.15 = 664,183,765.70 : x - Step 2: Convert to fraction form
1,276,403,797.70/1,914,668,682.15 = 664,183,765.70/x - Step 3: Cross multiply
1,276,403,797.70x = 1,914,668,682.15 × 664,183,765.70 - Step 4: Simplify right side
1,276,403,797.70x = 1,271,691,855,378,243,584 - Step 5: Solve for x
x = 1,271,691,855,378,243,584/1,276,403,797.70 - Step 6: Final answer
x = 996,308,423.45
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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.