Finding the Fourth Proportional to 1,643,830.87, 2,268,556.66 and 918,678.57
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Solution
The fourth proportional to 1,643,830.87, 2,268,556.66 and 918,678.57 is: 1,267,815.58
Step by Step Solution
- Step 1: Write the proportion equation
1,643,830.87 : 2,268,556.66 = 918,678.57 : x - Step 2: Convert to fraction form
1,643,830.87/2,268,556.66 = 918,678.57/x - Step 3: Cross multiply
1,643,830.87x = 2,268,556.66 × 918,678.57 - Step 4: Simplify right side
1,643,830.87x = 2,084,074,386,076.08 - Step 5: Solve for x
x = 2,084,074,386,076.08/1,643,830.87 - Step 6: Final answer
x = 1,267,815.58
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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.