Finding the Fourth Proportional to 874,676.20, 1,312,014.30 and 313,637.80
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Solution
The fourth proportional to 874,676.20, 1,312,014.30 and 313,637.80 is: 470,456.70
Step by Step Solution
- Step 1: Write the proportion equation
874,676.20 : 1,312,014.30 = 313,637.80 : x - Step 2: Convert to fraction form
874,676.20/1,312,014.30 = 313,637.80/x - Step 3: Cross multiply
874,676.20x = 1,312,014.30 × 313,637.80 - Step 4: Simplify right side
874,676.20x = 411,497,278,620.54 - Step 5: Solve for x
x = 411,497,278,620.54/874,676.20 - Step 6: Final answer
x = 470,456.70
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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.