Finding the Fourth Proportional to 717,073.26, 989,523.50 and 394,720.40
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Solution
The fourth proportional to 717,073.26, 989,523.50 and 394,720.40 is: 544,693.45
Step by Step Solution
- Step 1: Write the proportion equation
717,073.26 : 989,523.50 = 394,720.40 : x - Step 2: Convert to fraction form
717,073.26/989,523.50 = 394,720.40/x - Step 3: Cross multiply
717,073.26x = 989,523.50 × 394,720.40 - Step 4: Simplify right side
717,073.26x = 390,585,104,808.18 - Step 5: Solve for x
x = 390,585,104,808.18/717,073.26 - Step 6: Final answer
x = 544,693.45
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1.5x scale
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.