Finding the Fourth Proportional to 717,546.72, 990,257.28 and 411,621.12
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Solution
The fourth proportional to 717,546.72, 990,257.28 and 411,621.12 is: 568,061.70
Step by Step Solution
- Step 1: Write the proportion equation
717,546.72 : 990,257.28 = 411,621.12 : x - Step 2: Convert to fraction form
717,546.72/990,257.28 = 411,621.12/x - Step 3: Cross multiply
717,546.72x = 990,257.28 × 411,621.12 - Step 4: Simplify right side
717,546.72x = 407,610,810,681.75 - Step 5: Solve for x
x = 407,610,810,681.75/717,546.72 - Step 6: Final answer
x = 568,061.70
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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.