Finding the Fourth Proportional to 1,212,765,106.80, 1,815,746,437.80 and 1,178,752,882.80
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Solution
The fourth proportional to 1,212,765,106.80, 1,815,746,437.80 and 1,178,752,882.80 is: 1,764,823,489.72
Step by Step Solution
- Step 1: Write the proportion equation
1,212,765,106.80 : 1,815,746,437.80 = 1,178,752,882.80 : x - Step 2: Convert to fraction form
1,212,765,106.80/1,815,746,437.80 = 1,178,752,882.80/x - Step 3: Cross multiply
1,212,765,106.80x = 1,815,746,437.80 × 1,178,752,882.80 - Step 4: Simplify right side
1,212,765,106.80x = 2,140,316,347,990,580,736 - Step 5: Solve for x
x = 2,140,316,347,990,580,736/1,212,765,106.80 - Step 6: Final answer
x = 1,764,823,489.72
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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.