Finding the Fourth Proportional to 5,278,904.40, 7,920,430.20 and 2,083,486.80
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Solution
The fourth proportional to 5,278,904.40, 7,920,430.20 and 2,083,486.80 is: 3,126,048.61
Step by Step Solution
- Step 1: Write the proportion equation
5,278,904.40 : 7,920,430.20 = 2,083,486.80 : x - Step 2: Convert to fraction form
5,278,904.40/7,920,430.20 = 2,083,486.80/x - Step 3: Cross multiply
5,278,904.40x = 7,920,430.20 × 2,083,486.80 - Step 4: Simplify right side
5,278,904.40x = 16,502,111,772,021.36 - Step 5: Solve for x
x = 16,502,111,772,021.36/5,278,904.40 - Step 6: Final answer
x = 3,126,048.61
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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.