Finding the Fourth Proportional to 1,998,027,638.49, 2,756,644,265.70 and 1,162,490,783.88
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Solution
The fourth proportional to 1,998,027,638.49, 2,756,644,265.70 and 1,162,490,783.88 is: 1,603,868,480.89
Step by Step Solution
- Step 1: Write the proportion equation
1,998,027,638.49 : 2,756,644,265.70 = 1,162,490,783.88 : x - Step 2: Convert to fraction form
1,998,027,638.49/2,756,644,265.70 = 1,162,490,783.88/x - Step 3: Cross multiply
1,998,027,638.49x = 2,756,644,265.70 × 1,162,490,783.88 - Step 4: Simplify right side
1,998,027,638.49x = 3,204,573,553,311,900,160 - Step 5: Solve for x
x = 3,204,573,553,311,900,160/1,998,027,638.49 - Step 6: Final answer
x = 1,603,868,480.89
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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.