Finding the Fourth Proportional to 528,996.69, 730,029.87 and 311,220.68
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Solution
The fourth proportional to 528,996.69, 730,029.87 and 311,220.68 is: 429,493.03
Step by Step Solution
- Step 1: Write the proportion equation
528,996.69 : 730,029.87 = 311,220.68 : x - Step 2: Convert to fraction form
528,996.69/730,029.87 = 311,220.68/x - Step 3: Cross multiply
528,996.69x = 730,029.87 × 311,220.68 - Step 4: Simplify right side
528,996.69x = 227,200,388,911.56 - Step 5: Solve for x
x = 227,200,388,911.56/528,996.69 - Step 6: Final answer
x = 429,493.03
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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.