Finding the Fourth Proportional to 879,381.79, 1,212,583.15 and 572,889.80
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Solution
The fourth proportional to 879,381.79, 1,212,583.15 and 572,889.80 is: 789,960.09
Step by Step Solution
- Step 1: Write the proportion equation
879,381.79 : 1,212,583.15 = 572,889.80 : x - Step 2: Convert to fraction form
879,381.79/1,212,583.15 = 572,889.80/x - Step 3: Cross multiply
879,381.79x = 1,212,583.15 × 572,889.80 - Step 4: Simplify right side
879,381.79x = 694,676,518,286.87 - Step 5: Solve for x
x = 694,676,518,286.87/879,381.79 - Step 6: Final answer
x = 789,960.09
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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.