Finding the Fourth Proportional to 728,579.53, 1,005,444.12 and 406,309.99
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Solution
The fourth proportional to 728,579.53, 1,005,444.12 and 406,309.99 is: 560,710.22
Step by Step Solution
- Step 1: Write the proportion equation
728,579.53 : 1,005,444.12 = 406,309.99 : x - Step 2: Convert to fraction form
728,579.53/1,005,444.12 = 406,309.99/x - Step 3: Cross multiply
728,579.53x = 1,005,444.12 × 406,309.99 - Step 4: Simplify right side
728,579.53x = 408,521,985,315.54 - Step 5: Solve for x
x = 408,521,985,315.54/728,579.53 - Step 6: Final answer
x = 560,710.22
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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.