Finding the Fourth Proportional to 989,438,284.98, 1,484,156,174.12 and 252,508,206.03
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Solution
The fourth proportional to 989,438,284.98, 1,484,156,174.12 and 252,508,206.03 is: 378,761,989.18
Step by Step Solution
- Step 1: Write the proportion equation
989,438,284.98 : 1,484,156,174.12 = 252,508,206.03 : x - Step 2: Convert to fraction form
989,438,284.98/1,484,156,174.12 = 252,508,206.03/x - Step 3: Cross multiply
989,438,284.98x = 1,484,156,174.12 × 252,508,206.03 - Step 4: Simplify right side
989,438,284.98x = 374,761,612,989,520,896 - Step 5: Solve for x
x = 374,761,612,989,520,896/989,438,284.98 - Step 6: Final answer
x = 378,761,989.18
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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.