Finding the Fourth Proportional to 2,166,387, 2,989,716.74 and 1,306,928.80
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Solution
The fourth proportional to 2,166,387, 2,989,716.74 and 1,306,928.80 is: 1,803,623.69
Step by Step Solution
- Step 1: Write the proportion equation
2,166,387 : 2,989,716.74 = 1,306,928.80 : x - Step 2: Convert to fraction form
2,166,387/2,989,716.74 = 1,306,928.80/x - Step 3: Cross multiply
2,166,387x = 2,989,716.74 × 1,306,928.80 - Step 4: Simplify right side
2,166,387x = 3,907,346,911,348.11 - Step 5: Solve for x
x = 3,907,346,911,348.11/2,166,387 - Step 6: Final answer
x = 1,803,623.69
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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.