Finding the Fourth Proportional to 5,438,018.40, 7,504,658.08 and 2,990,818.72
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Solution
The fourth proportional to 5,438,018.40, 7,504,658.08 and 2,990,818.72 is: 4,127,435.81
Step by Step Solution
- Step 1: Write the proportion equation
5,438,018.40 : 7,504,658.08 = 2,990,818.72 : x - Step 2: Convert to fraction form
5,438,018.40/7,504,658.08 = 2,990,818.72/x - Step 3: Cross multiply
5,438,018.40x = 7,504,658.08 × 2,990,818.72 - Step 4: Simplify right side
5,438,018.40x = 22,445,071,872,863.26 - Step 5: Solve for x
x = 22,445,071,872,863.26/5,438,018.40 - Step 6: Final answer
x = 4,127,435.81
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1.5x scale
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.