Finding the Fourth Proportional to 717,068.18, 989,534.88 and 394,780.70
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Solution
The fourth proportional to 717,068.18, 989,534.88 and 394,780.70 is: 544,786.79
Step by Step Solution
- Step 1: Write the proportion equation
717,068.18 : 989,534.88 = 394,780.70 : x - Step 2: Convert to fraction form
717,068.18/989,534.88 = 394,780.70/x - Step 3: Cross multiply
717,068.18x = 989,534.88 × 394,780.70 - Step 4: Simplify right side
717,068.18x = 390,649,267,653.14 - Step 5: Solve for x
x = 390,649,267,653.14/717,068.18 - Step 6: Final answer
x = 544,786.79
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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.