Finding the Fourth Proportional to 720,564.98, 994,383.63 and 393,878.48
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Solution
The fourth proportional to 720,564.98, 994,383.63 and 393,878.48 is: 543,554.46
Step by Step Solution
- Step 1: Write the proportion equation
720,564.98 : 994,383.63 = 393,878.48 : x - Step 2: Convert to fraction form
720,564.98/994,383.63 = 393,878.48/x - Step 3: Cross multiply
720,564.98x = 994,383.63 × 393,878.48 - Step 4: Simplify right side
720,564.98x = 391,666,307,749.36 - Step 5: Solve for x
x = 391,666,307,749.36/720,564.98 - Step 6: Final answer
x = 543,554.46
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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.