Finding the Fourth Proportional to 542,648.80, 748,068.72 and 381,011.68
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Solution
The fourth proportional to 542,648.80, 748,068.72 and 381,011.68 is: 525,243.80
Step by Step Solution
- Step 1: Write the proportion equation
542,648.80 : 748,068.72 = 381,011.68 : x - Step 2: Convert to fraction form
542,648.80/748,068.72 = 381,011.68/x - Step 3: Cross multiply
542,648.80x = 748,068.72 × 381,011.68 - Step 4: Simplify right side
542,648.80x = 285,022,919,762.65 - Step 5: Solve for x
x = 285,022,919,762.65/542,648.80 - Step 6: Final answer
x = 525,243.80
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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.