Finding the Fourth Proportional to 1,291,192,279.97, 1,782,395,150.81 and 868,051,347.44
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Solution
The fourth proportional to 1,291,192,279.97, 1,782,395,150.81 and 868,051,347.44 is: 1,198,280,485.66
Step by Step Solution
- Step 1: Write the proportion equation
1,291,192,279.97 : 1,782,395,150.81 = 868,051,347.44 : x - Step 2: Convert to fraction form
1,291,192,279.97/1,782,395,150.81 = 868,051,347.44/x - Step 3: Cross multiply
1,291,192,279.97x = 1,782,395,150.81 × 868,051,347.44 - Step 4: Simplify right side
1,291,192,279.97x = 1,547,210,512,317,890,304 - Step 5: Solve for x
x = 1,547,210,512,317,890,304/1,291,192,279.97 - Step 6: Final answer
x = 1,198,280,485.66
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1.5x scale
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.