Finding the Fourth Proportional to 1,288,621.80, 1,778,439.08 and 737,388.45
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Solution
The fourth proportional to 1,288,621.80, 1,778,439.08 and 737,388.45 is: 1,017,676.74
Step by Step Solution
- Step 1: Write the proportion equation
1,288,621.80 : 1,778,439.08 = 737,388.45 : x - Step 2: Convert to fraction form
1,288,621.80/1,778,439.08 = 737,388.45/x - Step 3: Cross multiply
1,288,621.80x = 1,778,439.08 × 737,388.45 - Step 4: Simplify right side
1,288,621.80x = 1,311,400,438,464.10 - Step 5: Solve for x
x = 1,311,400,438,464.10/1,288,621.80 - Step 6: Final answer
x = 1,017,676.74
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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.