Finding the Fourth Proportional to 1,278,929.66, 1,764,503.78 and 911,464.68
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Solution
The fourth proportional to 1,278,929.66, 1,764,503.78 and 911,464.68 is: 1,257,522.54
Step by Step Solution
- Step 1: Write the proportion equation
1,278,929.66 : 1,764,503.78 = 911,464.68 : x - Step 2: Convert to fraction form
1,278,929.66/1,764,503.78 = 911,464.68/x - Step 3: Cross multiply
1,278,929.66x = 1,764,503.78 × 911,464.68 - Step 4: Simplify right side
1,278,929.66x = 1,608,282,873,196.49 - Step 5: Solve for x
x = 1,608,282,873,196.49/1,278,929.66 - Step 6: Final answer
x = 1,257,522.54
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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.