Finding the Fourth Proportional to 1,940,020,807.80, 2,910,031,211.70 and 957,917,839.80
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Solution
The fourth proportional to 1,940,020,807.80, 2,910,031,211.70 and 957,917,839.80 is: 1,436,876,759.70
Step by Step Solution
- Step 1: Write the proportion equation
1,940,020,807.80 : 2,910,031,211.70 = 957,917,839.80 : x - Step 2: Convert to fraction form
1,940,020,807.80/2,910,031,211.70 = 957,917,839.80/x - Step 3: Cross multiply
1,940,020,807.80x = 2,910,031,211.70 × 957,917,839.80 - Step 4: Simplify right side
1,940,020,807.80x = 2,787,570,812,062,240,256 - Step 5: Solve for x
x = 2,787,570,812,062,240,256/1,940,020,807.80 - Step 6: Final answer
x = 1,436,876,759.70
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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.