Finding the Fourth Proportional to 1,135,161,871.20, 1,702,742,806.80 and 522,941,839.20
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Solution
The fourth proportional to 1,135,161,871.20, 1,702,742,806.80 and 522,941,839.20 is: 784,412,758.80
Step by Step Solution
- Step 1: Write the proportion equation
1,135,161,871.20 : 1,702,742,806.80 = 522,941,839.20 : x - Step 2: Convert to fraction form
1,135,161,871.20/1,702,742,806.80 = 522,941,839.20/x - Step 3: Cross multiply
1,135,161,871.20x = 1,702,742,806.80 × 522,941,839.20 - Step 4: Simplify right side
1,135,161,871.20x = 890,435,455,072,562,176 - Step 5: Solve for x
x = 890,435,455,072,562,176/1,135,161,871.20 - Step 6: Final answer
x = 784,412,758.80
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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.