Finding the Fourth Proportional to 1,631,618,633.90, 2,251,563,306.99 and 926,768,421.02
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Solution
The fourth proportional to 1,631,618,633.90, 2,251,563,306.99 and 926,768,421.02 is: 1,278,900,428.99
Step by Step Solution
- Step 1: Write the proportion equation
1,631,618,633.90 : 2,251,563,306.99 = 926,768,421.02 : x - Step 2: Convert to fraction form
1,631,618,633.90/2,251,563,306.99 = 926,768,421.02/x - Step 3: Cross multiply
1,631,618,633.90x = 2,251,563,306.99 × 926,768,421.02 - Step 4: Simplify right side
1,631,618,633.90x = 2,086,677,770,845,691,648 - Step 5: Solve for x
x = 2,086,677,770,845,691,648/1,631,618,633.90 - Step 6: Final answer
x = 1,278,900,428.99
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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.