Finding the Fourth Proportional to 690,720.24, 1,036,220.46 and 217,295.49
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Solution
The fourth proportional to 690,720.24, 1,036,220.46 and 217,295.49 is: 325,987.31
Step by Step Solution
- Step 1: Write the proportion equation
690,720.24 : 1,036,220.46 = 217,295.49 : x - Step 2: Convert to fraction form
690,720.24/1,036,220.46 = 217,295.49/x - Step 3: Cross multiply
690,720.24x = 1,036,220.46 × 217,295.49 - Step 4: Simplify right side
690,720.24x = 225,166,032,603.73 - Step 5: Solve for x
x = 225,166,032,603.73/690,720.24 - Step 6: Final answer
x = 325,987.31
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1.5x scale
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.