Finding the Fourth Proportional to 989,438,285.98, 1,484,156,175.62 and 252,508,207.03
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Solution
The fourth proportional to 989,438,285.98, 1,484,156,175.62 and 252,508,207.03 is: 378,761,990.69
Step by Step Solution
- Step 1: Write the proportion equation
989,438,285.98 : 1,484,156,175.62 = 252,508,207.03 : x - Step 2: Convert to fraction form
989,438,285.98/1,484,156,175.62 = 252,508,207.03/x - Step 3: Cross multiply
989,438,285.98x = 1,484,156,175.62 × 252,508,207.03 - Step 4: Simplify right side
989,438,285.98x = 374,761,614,858,307,968 - Step 5: Solve for x
x = 374,761,614,858,307,968/989,438,285.98 - Step 6: Final answer
x = 378,761,990.69
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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.