Finding the Fourth Proportional to 717,069.80, 989,518.75 and 394,716.94
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Solution
The fourth proportional to 717,069.80, 989,518.75 and 394,716.94 is: 544,688.69
Step by Step Solution
- Step 1: Write the proportion equation
717,069.80 : 989,518.75 = 394,716.94 : x - Step 2: Convert to fraction form
717,069.80/989,518.75 = 394,716.94/x - Step 3: Cross multiply
717,069.80x = 989,518.75 × 394,716.94 - Step 4: Simplify right side
717,069.80x = 390,579,813,072.63 - Step 5: Solve for x
x = 390,579,813,072.63/717,069.80 - Step 6: Final answer
x = 544,688.69
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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.