Finding the Fourth Proportional to 1,186,390,446.21, 1,778,339,939.46 and 399,170,797.31
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Solution
The fourth proportional to 1,186,390,446.21, 1,778,339,939.46 and 399,170,797.31 is: 598,337,059.94
Step by Step Solution
- Step 1: Write the proportion equation
1,186,390,446.21 : 1,778,339,939.46 = 399,170,797.31 : x - Step 2: Convert to fraction form
1,186,390,446.21/1,778,339,939.46 = 399,170,797.31/x - Step 3: Cross multiply
1,186,390,446.21x = 1,778,339,939.46 × 399,170,797.31 - Step 4: Simplify right side
1,186,390,446.21x = 709,861,371,522,465,408 - Step 5: Solve for x
x = 709,861,371,522,465,408/1,186,390,446.21 - Step 6: Final answer
x = 598,337,059.94
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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.