Finding the Fourth Proportional to 639,516.72, 882,534.98 and 349,128.74
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Solution
The fourth proportional to 639,516.72, 882,534.98 and 349,128.74 is: 481,798.70
Step by Step Solution
- Step 1: Write the proportion equation
639,516.72 : 882,534.98 = 349,128.74 : x - Step 2: Convert to fraction form
639,516.72/882,534.98 = 349,128.74/x - Step 3: Cross multiply
639,516.72x = 882,534.98 × 349,128.74 - Step 4: Simplify right side
639,516.72x = 308,118,325,573.33 - Step 5: Solve for x
x = 308,118,325,573.33/639,516.72 - Step 6: Final answer
x = 481,798.70
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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.