Finding the Fourth Proportional to 717,508.36, 990,124.96 and 395,211.52
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Solution
The fourth proportional to 717,508.36, 990,124.96 and 395,211.52 is: 545,371.75
Step by Step Solution
- Step 1: Write the proportion equation
717,508.36 : 990,124.96 = 395,211.52 : x - Step 2: Convert to fraction form
717,508.36/990,124.96 = 395,211.52/x - Step 3: Cross multiply
717,508.36x = 990,124.96 × 395,211.52 - Step 4: Simplify right side
717,508.36x = 391,308,790,431.54 - Step 5: Solve for x
x = 391,308,790,431.54/717,508.36 - Step 6: Final answer
x = 545,371.75
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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.