Finding the Fourth Proportional to 728,864.48, 1,005,840.56 and 406,604
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Solution
The fourth proportional to 728,864.48, 1,005,840.56 and 406,604 is: 561,117.75
Step by Step Solution
- Step 1: Write the proportion equation
728,864.48 : 1,005,840.56 = 406,604 : x - Step 2: Convert to fraction form
728,864.48/1,005,840.56 = 406,604/x - Step 3: Cross multiply
728,864.48x = 1,005,840.56 × 406,604 - Step 4: Simplify right side
728,864.48x = 408,978,795,058.24 - Step 5: Solve for x
x = 408,978,795,058.24/728,864.48 - Step 6: Final answer
x = 561,117.75
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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.