Finding the Fourth Proportional to 1,643,549.80, 2,268,055.20 and 918,403.46
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Solution
The fourth proportional to 1,643,549.80, 2,268,055.20 and 918,403.46 is: 1,267,372.45
Step by Step Solution
- Step 1: Write the proportion equation
1,643,549.80 : 2,268,055.20 = 918,403.46 : x - Step 2: Convert to fraction form
1,643,549.80/2,268,055.20 = 918,403.46/x - Step 3: Cross multiply
1,643,549.80x = 2,268,055.20 × 918,403.46 - Step 4: Simplify right side
1,643,549.80x = 2,082,989,743,150.99 - Step 5: Solve for x
x = 2,082,989,743,150.99/1,643,549.80 - Step 6: Final answer
x = 1,267,372.45
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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.