Finding the Fourth Proportional to 1,291,589,653.95, 1,782,944,674.11 and 868,448,579.40
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Solution
The fourth proportional to 1,291,589,653.95, 1,782,944,674.11 and 868,448,579.40 is: 1,198,829,492.51
Step by Step Solution
- Step 1: Write the proportion equation
1,291,589,653.95 : 1,782,944,674.11 = 868,448,579.40 : x - Step 2: Convert to fraction form
1,291,589,653.95/1,782,944,674.11 = 868,448,579.40/x - Step 3: Cross multiply
1,291,589,653.95x = 1,782,944,674.11 × 868,448,579.40 - Step 4: Simplify right side
1,291,589,653.95x = 1,548,395,769,379,625,216 - Step 5: Solve for x
x = 1,548,395,769,379,625,216/1,291,589,653.95 - Step 6: Final answer
x = 1,198,829,492.51
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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.