Finding the Fourth Proportional to 717,228.62, 989,782.80 and 394,968.68
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Solution
The fourth proportional to 717,228.62, 989,782.80 and 394,968.68 is: 545,060.80
Step by Step Solution
- Step 1: Write the proportion equation
717,228.62 : 989,782.80 = 394,968.68 : x - Step 2: Convert to fraction form
717,228.62/989,782.80 = 394,968.68/x - Step 3: Cross multiply
717,228.62x = 989,782.80 × 394,968.68 - Step 4: Simplify right side
717,228.62x = 390,933,206,002.70 - Step 5: Solve for x
x = 390,933,206,002.70/717,228.62 - Step 6: Final answer
x = 545,060.80
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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.