Finding the Fourth Proportional to 1,542,985,263.12, 2,129,318,044.92 and 838,137,804.24
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Solution
The fourth proportional to 1,542,985,263.12, 2,129,318,044.92 and 838,137,804.24 is: 1,156,629,290.87
Step by Step Solution
- Step 1: Write the proportion equation
1,542,985,263.12 : 2,129,318,044.92 = 838,137,804.24 : x - Step 2: Convert to fraction form
1,542,985,263.12/2,129,318,044.92 = 838,137,804.24/x - Step 3: Cross multiply
1,542,985,263.12x = 2,129,318,044.92 × 838,137,804.24 - Step 4: Simplify right side
1,542,985,263.12x = 1,784,661,950,697,858,560 - Step 5: Solve for x
x = 1,784,661,950,697,858,560/1,542,985,263.12 - Step 6: Final answer
x = 1,156,629,290.87
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.