Finding the Fourth Proportional to 1,259,819,175.40, 1,889,728,763.10 and 999,625,661.80
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Solution
The fourth proportional to 1,259,819,175.40, 1,889,728,763.10 and 999,625,661.80 is: 1,499,438,492.70
Step by Step Solution
- Step 1: Write the proportion equation
1,259,819,175.40 : 1,889,728,763.10 = 999,625,661.80 : x - Step 2: Convert to fraction form
1,259,819,175.40/1,889,728,763.10 = 999,625,661.80/x - Step 3: Cross multiply
1,259,819,175.40x = 1,889,728,763.10 × 999,625,661.80 - Step 4: Simplify right side
1,259,819,175.40x = 1,889,021,365,436,332,800 - Step 5: Solve for x
x = 1,889,021,365,436,332,800/1,259,819,175.40 - Step 6: Final answer
x = 1,499,438,492.70
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1.5x scale
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.