Finding the Fourth Proportional to 858,907.80, 1,288,361.70 and 805,763.70
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Solution
The fourth proportional to 858,907.80, 1,288,361.70 and 805,763.70 is: 1,208,645.55
Step by Step Solution
- Step 1: Write the proportion equation
858,907.80 : 1,288,361.70 = 805,763.70 : x - Step 2: Convert to fraction form
858,907.80/1,288,361.70 = 805,763.70/x - Step 3: Cross multiply
858,907.80x = 1,288,361.70 × 805,763.70 - Step 4: Simplify right side
858,907.80x = 1,038,115,090,330.29 - Step 5: Solve for x
x = 1,038,115,090,330.29/858,907.80 - Step 6: Final answer
x = 1,208,645.55
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.