Finding the Fourth Proportional to 1,990,387,981.80, 2,985,581,972.70 and 1,867,704,826.95
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Solution
The fourth proportional to 1,990,387,981.80, 2,985,581,972.70 and 1,867,704,826.95 is: 2,801,557,240.43
Step by Step Solution
- Step 1: Write the proportion equation
1,990,387,981.80 : 2,985,581,972.70 = 1,867,704,826.95 : x - Step 2: Convert to fraction form
1,990,387,981.80/2,985,581,972.70 = 1,867,704,826.95/x - Step 3: Cross multiply
1,990,387,981.80x = 2,985,581,972.70 × 1,867,704,826.95 - Step 4: Simplify right side
1,990,387,981.80x = 5,576,185,861,666,693,120 - Step 5: Solve for x
x = 5,576,185,861,666,693,120/1,990,387,981.80 - Step 6: Final answer
x = 2,801,557,240.43
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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.