Finding the Fourth Proportional to 1,638,537,822.36, 2,457,809,226.90 and 669,189,438.36
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Solution
The fourth proportional to 1,638,537,822.36, 2,457,809,226.90 and 669,189,438.36 is: 1,003,785,175.84
Step by Step Solution
- Step 1: Write the proportion equation
1,638,537,822.36 : 2,457,809,226.90 = 669,189,438.36 : x - Step 2: Convert to fraction form
1,638,537,822.36/2,457,809,226.90 = 669,189,438.36/x - Step 3: Cross multiply
1,638,537,822.36x = 2,457,809,226.90 × 669,189,438.36 - Step 4: Simplify right side
1,638,537,822.36x = 1,644,739,976,145,236,992 - Step 5: Solve for x
x = 1,644,739,976,145,236,992/1,638,537,822.36 - Step 6: Final answer
x = 1,003,785,175.84
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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.