Finding the Fourth Proportional to 989,539,003.98, 1,366,028,750.88 and 571,770,478.26
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Solution
The fourth proportional to 989,539,003.98, 1,366,028,750.88 and 571,770,478.26 is: 789,311,900.86
Step by Step Solution
- Step 1: Write the proportion equation
989,539,003.98 : 1,366,028,750.88 = 571,770,478.26 : x - Step 2: Convert to fraction form
989,539,003.98/1,366,028,750.88 = 571,770,478.26/x - Step 3: Cross multiply
989,539,003.98x = 1,366,028,750.88 × 571,770,478.26 - Step 4: Simplify right side
989,539,003.98x = 781,054,912,207,568,000 - Step 5: Solve for x
x = 781,054,912,207,568,000/989,539,003.98 - Step 6: Final answer
x = 789,311,900.86
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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.