Finding the Fourth Proportional to 1,275,508,965.40, 1,913,263,448.10 and 967,131,467.80
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Solution
The fourth proportional to 1,275,508,965.40, 1,913,263,448.10 and 967,131,467.80 is: 1,450,697,201.70
Step by Step Solution
- Step 1: Write the proportion equation
1,275,508,965.40 : 1,913,263,448.10 = 967,131,467.80 : x - Step 2: Convert to fraction form
1,275,508,965.40/1,913,263,448.10 = 967,131,467.80/x - Step 3: Cross multiply
1,275,508,965.40x = 1,913,263,448.10 × 967,131,467.80 - Step 4: Simplify right side
1,275,508,965.40x = 1,850,377,286,849,041,920 - Step 5: Solve for x
x = 1,850,377,286,849,041,920/1,275,508,965.40 - Step 6: Final answer
x = 1,450,697,201.70
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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.