Finding the Fourth Proportional to 1,378,955,087.80, 2,068,432,631.70 and 1,266,084,892.60
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Solution
The fourth proportional to 1,378,955,087.80, 2,068,432,631.70 and 1,266,084,892.60 is: 1,899,127,338.90
Step by Step Solution
- Step 1: Write the proportion equation
1,378,955,087.80 : 2,068,432,631.70 = 1,266,084,892.60 : x - Step 2: Convert to fraction form
1,378,955,087.80/2,068,432,631.70 = 1,266,084,892.60/x - Step 3: Cross multiply
1,378,955,087.80x = 2,068,432,631.70 × 1,266,084,892.60 - Step 4: Simplify right side
1,378,955,087.80x = 2,618,811,306,356,229,632 - Step 5: Solve for x
x = 2,618,811,306,356,229,632/1,378,955,087.80 - Step 6: Final answer
x = 1,899,127,338.90
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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.