Finding the Fourth Proportional to 518,821.98, 715,973.91 and 280,357.98
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Solution
The fourth proportional to 518,821.98, 715,973.91 and 280,357.98 is: 386,893.78
Step by Step Solution
- Step 1: Write the proportion equation
518,821.98 : 715,973.91 = 280,357.98 : x - Step 2: Convert to fraction form
518,821.98/715,973.91 = 280,357.98/x - Step 3: Cross multiply
518,821.98x = 715,973.91 × 280,357.98 - Step 4: Simplify right side
518,821.98x = 200,728,999,140.30 - Step 5: Solve for x
x = 200,728,999,140.30/518,821.98 - Step 6: Final answer
x = 386,893.78
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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.