Finding the Fourth Proportional to 1,423,296.76, 1,964,198.55 and 778,716.94
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Solution
The fourth proportional to 1,423,296.76, 1,964,198.55 and 778,716.94 is: 1,074,656.20
Step by Step Solution
- Step 1: Write the proportion equation
1,423,296.76 : 1,964,198.55 = 778,716.94 : x - Step 2: Convert to fraction form
1,423,296.76/1,964,198.55 = 778,716.94/x - Step 3: Cross multiply
1,423,296.76x = 1,964,198.55 × 778,716.94 - Step 4: Simplify right side
1,423,296.76x = 1,529,554,684,408.44 - Step 5: Solve for x
x = 1,529,554,684,408.44/1,423,296.76 - Step 6: Final answer
x = 1,074,656.20
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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.