Finding the Fourth Proportional to 717,217.59, 989,767.62 and 394,957.65
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Solution
The fourth proportional to 717,217.59, 989,767.62 and 394,957.65 is: 545,045.60
Step by Step Solution
- Step 1: Write the proportion equation
717,217.59 : 989,767.62 = 394,957.65 : x - Step 2: Convert to fraction form
717,217.59/989,767.62 = 394,957.65/x - Step 3: Cross multiply
717,217.59x = 989,767.62 × 394,957.65 - Step 4: Simplify right side
717,217.59x = 390,916,293,241.29 - Step 5: Solve for x
x = 390,916,293,241.29/717,217.59 - Step 6: Final answer
x = 545,045.60
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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.