Finding the Fourth Proportional to 1,664,866,539.20, 2,297,656,911.84 and 922,543,451.84
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Solution
The fourth proportional to 1,664,866,539.20, 2,297,656,911.84 and 922,543,451.84 is: 1,273,188,143.72
Step by Step Solution
- Step 1: Write the proportion equation
1,664,866,539.20 : 2,297,656,911.84 = 922,543,451.84 : x - Step 2: Convert to fraction form
1,664,866,539.20/2,297,656,911.84 = 922,543,451.84/x - Step 3: Cross multiply
1,664,866,539.20x = 2,297,656,911.84 × 922,543,451.84 - Step 4: Simplify right side
1,664,866,539.20x = 2,119,688,338,592,908,288 - Step 5: Solve for x
x = 2,119,688,338,592,908,288/1,664,866,539.20 - Step 6: Final answer
x = 1,273,188,143.72
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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.